The spotted Corydoras is a small bottom-dwelling fish with a body covered in rows of bony plates instead of regular scales. It lives in rivers of South America, often stays in schools, and helps clean the bottom from food remnants.
The spotted Corydoras differs from other catfish by two rows of bony plates and the habit of living in schools on the bottom. It is important for nature because it processes organic remnants and serves as food for larger fish.
treatment of the underlying cause; high-calorie diet; vitamins
Immature form that undergoes metamorphosis before adulthood.
Describes the act of excavating soil or substrate to locate or access food.
weakened fish
diet
soil organic matter
daphnia
Map
depends on care
improvement of water parameters; prescription of broad-spectrum antibacterial drugs; salt baths
sudden parameter changes
live food feeding
hepatosis genetic
Congenital, does not progress.
ketosis
infection via feed
metals in water
chronic course
depends on accompanying problems
surgical removal if possible; supportive therapy
nephrocalcinosis
South and Central America, hot and humid, huge forests
elimination of the cause; antiparasitic treatment
spinal deformity syndrome
supportive therapy; reduction of load
unsuitable feed
hepatic diseases
diet with reduced protein content; maintaining optimal water parameters
Acute condition.
genetic kyphosis
anti-inflammatory agents; antibiotics; salt baths
Chronic, lasting months
golden plaque
dehydration
congenital
coccidiostats; supportive therapy
bacterial gill necrosis
infected bacteria
age diag byOther
antibacterial therapy; improvement of water parameters
chilodonella piscicola
hexamita / spironucleus
costiasis
Upcoming birthdays
mouth deformation
Rapid reproduction over 2–5 days.
nocardia
spinal deformity
Lifespan
Sweeps open mouth through water to scoop up fish or invertebrates.
white skin spots
Affecting multiple organs or the entire body.
surgery when possible
injury
Rapid deterioration over 3–7 days.
hexamitiasis, hexamita muris
special feeding; ground feed
uneven gait
Rapid or slow course.
pain on movement
Earliest developmental stage inside an egg or womb.
henneguya
Lifespan average
chilodonellosis
blue coating
Severity rating for disorders affecting movable joints.
fluid accumulation
albinism
spores in water
Freshwater
scooping
chronic inflammation
starvation
Appearance of spots at the age of 3–6 months; progresses slowly.
fatal
limb hypothermia
tissue erosion
Varying degrees of severity from birth.
Adipose fin color
tumor formation
hereditary defect
water quality improvement; antibacterial drugs; salt baths
cm
genetic predisposition
granulomas in organs
masses in tissues
turns
anthelmintic drugs
Causes gill necrosis.
white cysts on gills
white cottony growths
Fat
disease
Progresses over months.
renal failure
eimeria
Actively searching habitats to locate food items.
dwarfism syndrome
ergasilus sieboldi
enlarged kidneys
praziquantel in standard doses
raising the temperature to 30–32°C; adding table salt 1–3 g/l; administering malachite green group drugs or formalin at recommended doses; frequent water changes; enhanced aeration
Prolonged course
feeding problems
fin limb necrosis
aeromonas hydrophila infection
Locomotion through water employed while searching for or capturing prey.
Offspring
cardiomyopathy
Elders
Rapid progression in young fish.
Visible parasites after 3–6 weeks.
fatty beef
Bro
Long-lasting or recurring health condition persisting over an extended period.
lakes and ponds
metronidazole at recommended doses
freshwater marsh and wetlands
chronic condition
Stable or slowly progressive.
improving water quality; boosting immunity
antibacterial therapy; diuretics
Can last from several days to weeks.
Chronic course 4–12 weeks.
gyrodactylus
flavobacterium columnare
birth date
monogeneans
anorexia
Career from 7 to 15 months. Dwarf hamsters, voles, field crickets celebrate their birthday twice a month
The basics
cautious
young after transformation
chronic stress disorders
genetic pigment anomaly
vertebral deformities
velvet coating
poor nutrition
suction
virus
aggressive therapy; salt baths
favorable
Mass
whitening of edges
unfavorable in severe form
Gestation
Manifests in the first 2–4 weeks.
hepatoprotectors; therapeutic diet
white cysts body
May metastasize.
spinal curvature — genetic
body spasms
fatty liver dystrophy
photophobia
underground
nutrition optimization; high-quality feeds
On the map
Female ♀
inherited cataract
Body color
Body temperature
copper and compounds
Map data sources: Ecosystem classification — IUCN Global Ecosystem Typology (Keith et al., 2022), indicative distribution maps Keith et al. (2020), https://doi.org/10.5281/zenodo.3546513; Large Marine Ecosystems — NOAA LME Program; Bathymetry — GEBCO Bathymetric Compilation Group (2026), GEBCO_2026 Grid, https://doi.org/10.5285/4f68d5c7-45eb-f999-e063-7086abc036fa; Climate data — Generated using Copernicus Climate Change Service information; Species occurrence data — GBIF.org, Derived dataset "all animals", https://zveriki.com/dataset/dataset.tsv; Terrestrial ecoregions — RESOLVE Ecoregions 2017 (Dinerstein et al., 2017), CC BY 4.0
Potential habitat modelled from GBIF occurrence data. Map © Zveriki.com, licensed under CC BY 4.0.
digenean trematodes
supportive care; exclusion of stress
birth year
supportive care
sq mm
chronic toxins
Indicates a minor health issue that typically resolves with minimal intervention.
ammonia
until the celebration
What if eaten?
Slow progression
Develops at the age of 4–12 months.
insects from nature
digestive disorder
world of Afrotropics
antibiotics; antiseptics; water improvement
anti-inflammatory therapy; antibiotics for bacterial cause
filter feeding
glugea
Viviparous parasites — very rapid spread.
frequent infections
correction of housing conditions; vitamin therapy
How are they built?
mm
ml
My age?
Serious or life-threatening health condition requiring urgent attention.
white nodules
Indicates the ailment is long-lasting and typically requires ongoing management.
Iodine
Rabbits, falcons, red-eared turtles hang out for 6-9 years and party on their birthday four times a year
Sensory system detecting water movements to locate prey.
chronic anemia
stress
Chronic, difficult to treat.
fin rot
micro worms
preparations against flagellates; temperature increase; water changes
embryo
cottony coating on body
acute jaundice
Rapid development.
kg
inverted swimming
proteinuria
severe intoxication
chronic constipation
bottom
loss of appetite
m
skin and gill irritation
g
t
refusal to eat
depends on timely intervention
euthanasia of sick individuals; thorough disinfection
How old you would be if you lived as {name}
Theoretical maximum lifespan estimated from the Dynamic Energy Budget (DEB) mathematical model. This value reflects a biological potential derived from metabolic parameters, not from direct observation — real recorded lifespans are often significantly shorter.
swollen body
genetic pigmentation anomaly
excessive mucus
no specific treatment; strict quarantine; destruction of sick fish; disinfection
supportive oxygenation; symptomatic treatment
spondyloarthrosis
multiple tumors
movement stiffness
parasite
fenbendazole or levamisole in recommended doses; quarantine
diet correction; exclusion of bloating; antibacterial therapy for secondary infection
optimization of housing conditions; reduction of stocking density; environmental enrichment
metronidazole; vitamins; improvement of conditions
kyphosis
spinal curvature syndrome
sudden dyspnea
systemic
Sex
polydactyly
dark skin spots
diseases symptoms pigment absence
high ammonia
oodinium disease
formalin treatment; temperature increase
Truly long lives: 40-100 years. Bowhead whales, albatrosses, giant tortoises recall their birthday at most once a year
supportive therapy
humps on back
insect larvae and caterpillars
inherited hydrocephalus
high nitrates
Foraging occurs on the floor of aquatic or terrestrial habitats.
traumatic pericarditis
tetrahymenosis
moderate
artemia nauplii
Juvenile stage following larval metamorphosis but not yet adult.
oodinium pillularis
swampy freshwater biotopes — peat bogs, marshes, river mangroves
constant toxins
Mature, fully developed individual capable of reproduction.
entamoeba caviae
Prolonged course over months.
high aggression
Lifelong condition without progression.
low-protein diet; water parameter control
low oxygen level
Pets
Primary oral structure used to seize, manipulate, or ingest food.
oncogenic factors
It progresses with age.
Rapid deterioration in the first 7–14 days; often fatal outcome.
white body
Find an animal or breed...
diseases symptoms bulging eyes
recessive gene
Litter size
Tropical savanna
rapid breathing
Map data sources: Ecosystem classification — IUCN Global Ecosystem Typology (Keith et al., 2022), indicative distribution maps Keith et al. (2020), https://doi.org/10.5281/zenodo.3546513; Large Marine Ecosystems — NOAA LME Program; Bathymetry — GEBCO Bathymetric Compilation Group (2026), GEBCO_2026 Grid, https://doi.org/10.5285/4f68d5c7-45eb-f999-e063-7086abc036fa; Climate data — Generated using Copernicus Climate Change Service information; Species occurrence data — GBIF.org, Derived dataset "all animals", https://zveriki.com/dataset/dataset.tsv; Terrestrial ecoregions — RESOLVE Ecoregions 2017 (Dinerstein et al., 2017), CC BY 4.0
How to care for them?
common diseases
improving the diet; adding vitamins; reducing stress
°C
Not specified
overfeeding fatty food
marfan syndrome-like
support of cardiac activity; stress reduction; optimal temperature
symptomatic therapy; euthanasia in severe form
Very rapid course, often fatal outcome in 3–5 days.
Benign, slow.
mass mortality
observation; anti-inflammatory agents are prescribed for inflammation
depends on severity
chronic stress
if born as {name}
Rapid reproduction.
antiparasitic drugs; improvement of aeration
enlarged abdomen
petechial hemorrhages
omnivore
gill damage
Develops over 5–14 days.
Causes respiratory failure.
Protein
swimming
Acute — 1–3 days; resolves with dietary correction.
Barbels count
untreated tap water
Tumors may appear after 1–2 years.
ichthyophonus hoferi
primary food sources
Neotropical realm
improvement of water quality; antibacterial drugs
unfavorable in terminal stage
hepatic lipidosis
myxobolus
broad-spectrum antibiotics (fluoroquinolones, tetracyclines in therapeutic doses); improvement of water quality; salt baths
Water
supportive therapy; surgical removal for solitary tumors; palliative care
diet with reduced lipid content; hepatoprotectors
terrestrial
muscle deformation
Acute poisoning within hours.
age diag byColoration
dark neoplasms
{name} birthday
soil
Reversible within 7–30 days upon elimination of the cause.
costiosis
skin ulcer disease
lymphoma
antifungal drugs; removal of affected areas; improved aeration
Disease affecting the liver and its functions.
red eye
liver fibrosis
balance loss
cholangiocarcinoma
shortened antennae
draft
correction of mineral supplements; control of calcium and phosphorus
shrimp
environmental pollution
chronic hepatitis
comfortable summer, +20…+25 °C
surgical removal if possible; diet therapy
ammonia burn
severe
Acute course 3–7 days.
Frequently observed or widespread in the species or population.
hereditary nephropathy
Acute course — 48–72 hours until death; chronic — several weeks.
formalin treatment; temperature increase; improvement of conditions
acute glomerulonephritis
Intestinal damage.
age as {name}
corneal opacity
genetic anomalies
prolonged antibiotic therapy (rifampicin, clarithromycin); environmental improvement; euthanasia often recommended
Health issue of intermediate seriousness, neither mild nor life-threatening.
mineral metabolism disorder
artemia
metronidazole in recommended doses; dietary improvement
Hard dental structures used to bite, tear, or scrape food.
congenital heart defect
dactylogyrus vastator
high organics
formalin; acriflavine
syringomyelia
Acute course 3–10 days.
Progresses over weeks-months.
Aggressive course.
Condition that typically results in death without intervention.
low-protein diet; electrolyte control; maintaining water quality
This is me
barbels erosion
absence or deformity of opercula
splanchnoptosis
trichodiniasis
pokes with its mouth in the ground and sucks in food particles
favorable after eliminating cause
ulcers on skin and mucous membranes
intestinal function disorders
Asexual
spironucleus vortens
pits in head
no specific treatment; quarantine; euthanasia
nacl
oncogenic mutations
When you would have been born if you lived as {name}
migration melanoblasts disorder
Daddies
supportive therapy; diet
aggressive antiparasitic therapy; salt baths; frequent water changes
foraging
chronic progressive condition
Hermaphrodite ⚥
formalin; temperature increase; aeration
intestinal adenoma
gill parasites
genetic diseases
metronidazole
Invasive growth.
Develops over 4–8 weeks.
will celebrate their {n} birthday
no itching
organ diseases
Progresses rapidly.
Litters lifetime count
detritus, eat dead remains of plants, animals and all kinds of organic debris on the bottom
South and Central America, hot and humid, huge forests
chemotherapy in rare cases; supportive care
whiskers
infection
Appearance of plaque within 1–3 days; without treatment — death within 7–10 days.
Captures food by straining water or substrate through specialized structures.
2–6 weeks.
hereditary tumor predisposition
water changes; use of chelators; symptomatic therapy
genetic defect
temperature increase; treatment with anti-oödinium drugs; 30–50% water changes
regular replacements; siphoning the substrate; improving water quality
dirty water
water contamination
Repro interval
Acute course
fungal granuloma
temperature for housing
rotifers
metronidazole; diet
mucus discharge
Gremllins
Disease affecting the heart or blood vessels.
antibiotics; surgical removal of granulomas
Filters
Incubation period 7–14 days; acute course with high mortality.
Develops within 7–14 days.
enhanced aeration; temperature reduction; reduction of biological load
buoyancy disorder
Slow development over 6–24 months.
joint diseases
treatment of secondary infections; salinity control
tetrameriasis
From birth; affects maneuverability.
Wanderers
Slow development in adult individuals.
hepatocellular carcinoma analogue
Jubilee = every 10th birthday
Draws prey or water into the mouth by creating negative pressure.
Minimum space
pelleted feed
reduced fins
Business sausages
ascites
skin necrosis
diarrhea
cystic formations
genetic anomaly
How do they behave?
depends on localization
Chronic wasting.
temperature reduction; antibiotics; salt baths
Carbohydrates
hot, uneven rains, lots of grass and trees
immune reactions
scraped beef heart
feed
scoliosis
hereditary opercular deformity
Rapid deterioration within 1–2 months.
dry bread
all rivers and lakes
Symptoms within 1–4 hours.
immediate water changes; use of conditioners; immune support
Feeding occurs primarily on land or in vegetation.
{name} jubilee
nitrites and ammonia
mechanical removal; treatment with potassium permanganate; antibacterial therapy
Old-timers
salt baths; antiparasitic agents
pregnancy toxemia
saprolegnia parasitica
lighting
Rascals
diet imbalance
observation; diet
hot Africa south of the desert, many savannas and forests
bleeding sores
heart failure
Disease caused by pathogenic microorganisms: bacteria, viruses, fungi, or protozoa.
Barbels size
skin ulcers
abscesses on body
infection prevention; immune support through diet and water parameters
starvation diet for 2–3 days; switch to live feeds; laxatives
Where are they found?
Species lacks any fixed or lasting shelter structure.
cell division disorder
all rivers and lakes
hepatic encephalopathy
From birth; chronic hypoxia.
dropsy
columnaris gill infection
polycystic kidney disease
Acute or chronic
Accelerated growth in the first 3 months.
white flakes
Examination schedule
Progresses over 3–6 months.
various anomalies
unusual coloration
no permanent shelter
cryptobia
gill cysts
diseases symptoms movement disorder
leucism
removal of affected tissues; antifungal agents; improvement of aeration
therapeutic diet with low fat content; hepatoprotectors
increased aeration; prevention of secondary infections
My weight?
Non-stop carnival: they only live a few days. Mayflies, rotifers, midges celebrate their birthday more than twice a day
hypoglycemia
bone deformity
teeth
surgical removal
Potential Habitat
Incubation 3–7 days; mild course — 10–14 days with treatment; severe — mass mortality within 5–7 days.
In husbandry
On the go from 1.3 to 3.5 years. Forest mice, anoles, rainbow fish party on their birthday once a month
Feeding occurs in water bodies such as rivers, lakes, or oceans.
recommended to keep in an aquarium with subdued lighting; avoid bright light; use plants for shading; no special diet required
weakened immunity
substrate
capillaria contorta
aquatic
Chronic course 2–8 weeks.
Rapid deterioration over 3–10 days.
branchiomyces demigrans
chlorine toxicity
body fading
antibiotic therapy
No results found
gill hyperplasia
distended abdomen
symptomatic treatment; diet
small crustaceans
cachexia
viral hemorrhagic disease
renal diseases
destruction of gill filaments
lernaea cyprinacea
anchor worms on body
low water temperature
temperature reduction; antibacterial drugs; salt baths; therapeutic diets
surgical intervention if possible; palliative care
coordination disorder
Calcium + Vitamin D3
osmotic salt treatment; antibacterial drugs; diuretics in therapeutic doses; fish isolation
Develops quickly.
unfavorable without treatment
mouth destruction
diet correction; exclusion of dry feeds; antibacterial therapy if necessary
How similar?
salt baths; antiparasitic drugs
Male ♂
levamisole; fenbendazole; aquarium cleaning
bloating
On the go from 3.5 to 6 years. Hedgehogs, crows, lizards treat themselves to birthday snacks 6 times a year
fungi
sessile ciliates
Neither
enlarged head
improvement of conditions; symptomatic treatment
no effective treatment; destruction of sick fish
genetic scoliosis
vision impairment
Freshwater
Duration
nephroblastoma
parasitic diseases
shock
freshwater
Acute course 2–7 days; chronic with low virulence.
soft tissue sarcoma
Theoretical lifespan
Stars
Link copied
treatment of the cause; powerful aeration; antibacterial and antiparasitic agents
vegetables and fruits
saprolegnia infection
neoechinorhynchus
enlarged liver
From birth.
freshwater environment — rivers, lakes, ponds, swamps
Chronic invasion.
beef heart
skin irritation
antiseptic baths; antibiotics; improvement of water quality
inbreeding
Development cycle 3–7 days at 25°C; severe infestation leads to death within a week.
Where do they take shelter?
Warm summer and lots of rain
renal tumor
no treatment; quarantine
Develops in 7–21 days.
Cycle 4–7 days.
infectious diseases
Disorder caused by inherited or mutation-based factors.
Progresses over 2–8 weeks.
unfavorable in acute form
small crabs, amphipods and other crustaceans
general emaciation
Lifespan maximum
white mucous feces
bacterial gill disease
Develops with prolonged exposure to the irritant.
Grape
The parasite invades within a few days.
Disease affecting the kidneys and their function.
lots of rain, warm and pleasant summer
Symptoms within several hours.
congestive heart failure
Observations
irritants
genetic hemophilia-like syndrome
Worker
birth time
hemorrhages throughout the body
sharp depression
Progresses over many months.
anti-inflammatory drugs; improvement of conditions
Dogs, dolphins, lynx hang out for 9-25 years and party on their birthday three times a year
praziquantel at therapeutic dose; improvement of water quality
worm
When your next jubilee falls in {name} life years
Human
trichodina
Manifests in the first 14–21 days; mild form — minimal disturbances; severe form — fatal outcome within 2–4 months.
Fulminant course — death within 24–48 hours.
days
Disease affecting specific internal organs or organ systems.
gray skin coating
bloodsucking crustaceans
adult
swimming disorder
Maturity
organic debris
Health
Manifests from the moment of hatching; mild course — lifelong sensitivity to light; severe — increased mortality in the first 30 days.
About health
supportive therapy; water quality improvement; special diet with increased vitamin content
When your next birthday would fall if you lived as {name}
depression
mycobacteriosis — mycobacterium
results
edwardsiellosis
Congenital; stable condition throughout life.
red gills
intervertebral disc disease
Colors
chronic
organophosphate or ivermectin-based preparations; mechanical removal
Upcoming jubilees
mo
diseases symptoms small body size
xanthochromism
Trophic type
fin base inflammation
always hot and humid, huge trees and vines
spinal kink
raised scales
standing fresh waters — lakes, ponds, oxbow lakes
columnariosis
4–8 days.
protection from injuries; good aeration
Age (from birth to death)
bloodworm
often unfavorable
chronic hypoxia
copper sulfate; temperature increase
hyperpigmentation
poor diet
protection from bright light is recommended; standard care
chronic kidney disease
surgical excision; observation
young after fast growth
gill death
osmotic shock
Chronic course
What do they look like?
Maturity
emergence (insects)
end of lifespan
How do they live?
fertilization / egg laying
tumor like muscle growths
birth / hatching
metamorphosis / end of larval stage
end of acceleration
depends on location and stage
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Find a pet...
hyperplasia
bottom fish tablets
digging
exophthalmia congenita
antifungal drugs; surgery if possible
spine malformation
Increased morbidity from the first months.
acidic substrate
lateral line
praziquantel-sensitive flukes
viral factors
dark eyes
Rapid spread over 2–5 days.
Slow development over months.
raising the temperature to 30–32°C for 10 days; use of preparations based on malachite green or copper sulfate; salt baths; frequent water changes
visceral gout — kidney
mouth
feline hepatic disease complex
yellow coloration
intermediate hosts
It can be acute or chronic.
gene mutation
rapid surface breathing
symptomatic treatment; destruction of affected fish
infectious hematopoietic necrosis
pleistophora hyphessobryconis
white threadlike stool
age
Living from 25 to 40 years. Orangutans, bald eagles, African elephants celebrate their birthday twice a year
lens opacity
Systemic lesion.
congenital scoliosis
Develops within 3–12 months.
Legendary longevity: over 100 years. Galapagos tortoises, Greenland sharks, ocean quahogs celebrate with family once every 4 years
velvet disease
Tropical moist forest
weight loss
Present at birth due to genetic or developmental factors.
columnaris disease
Taxons
tail fin destruction
Forages within or on the surface of soil or substrate.
argulus foliaceus
immediate improvement of water quality; antifungal agents; often unsuccessful
Chronic course 3–12 months.
age
irritation
observation
genetics
high temperature
Close
tubifex from natural reservoirs
was
maintaining water quality; vitamin A group
Neotropical realm
liver cirrhosis
Very rapid course, high mortality.
contact
no specific treatment; standard housing conditions
white mucus
d
camallanus cotti
Mosquitoes, fruit flies, small crustaceans hustle for up to 7 months and throw a birthday party every week
heavy metal toxicity
skin granulomas
Growth retardation from day 14 of life.
immune suppression
age related changes
age diag bySize
hypokalemia syndrome
praziquantel; salt baths; formalin
atherosclerotic heart disease
swim bladder disorder
Pleasant summer
all life stages
Tumour-related disease including malignant and benign neoplasms.
supportive therapy; inflammation control
praziquantel; removal of intermediate hosts
ascites syndrome
hereditary factors
Progresses over 30–60 days.
pale skin
cerebral edema
trichomoniasis
mild
live earthworms
pseudomonosis
diet control; obesity prevention
Maturity
destruction of affected fish; disinfection; improvement of immunity
diet; stress reduction
yr
body deformity
slow acclimatization; stabilization of parameters
Incurable.
It develops gradually over 6–18 months.
How do they breed?
Discomfort or pain experienced specifically during locomotion.
excessive body growth
Chronic course with poor maintenance.
hepatoprotectors; therapeutic diet low in fat; exclusion of toxins
metronidazole; nutrition improvement
What do they eat?
insect larvae
Where do they live?
red threads at anus
early young
cardiovascular diseases
poor water quality
immediate water change to aged water; use of chlorine neutralizers
Develops in 7–14 days; chronic course with constant stress.
Gamers
hepatic ascites
lordosis
body asymmetry
malignant melanoma
Indicates recovery is likely when appropriate husbandry is provided.
hereditary swim bladder dystrophy
Detected at the age of 10–20 days.
wk
My size?
temperament
spring viremia of carp
Dorsal fin color
swap
favorable after correction
renal adenocarcinoma
guarded depends on progression
Damage within 24–48 hours.
celebrated their {n} birthday
mild enteritis
Illness caused by parasites such as worms, protozoa, or ectoparasites.
swim bladder tumor
oncological diseases
unfavorable
ichthyophthirius multifiliis
offering live food; improving conditions; forced feeding in severe cases
depends on location and timeliness of treatment
8 to 11 grams, 1.5 – 8 centimeters
flavobacteriosis
Final stage of liver pathology.
hereditary immunodeficiency
Length
◉{N} more on tap