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No federal permit to keep

Spotted corydoras

Corydoras ambiacus

Also known as Agassiz's catfish

Fishes › Catfish (Siluriformes) › Callichthyidae (Corydoras and armored catfish)

The spotted corydoras (Brochis ambiacus) is a species of freshwater ray-finned fish belonging the family Callichthyidae, the armoured catfishes, and the subfamily Corydoradinae, the corys.

Aquarium hobby

Experience: Beginner

FamilyCorydoras and armored catfish

Adult lengthup to 2.6 in

WaterFreshwater

HabitatLives in freshwater. Stays near the bottom

Care at a glance

Species-specific aquarium care

Tank: At least 24 in long and 12 in front to back for one adult (adults commonly reach about 1.9 in / 4.9 cm).
Water: Freshwater.
Temperature: 70–75°F (range recorded for this species).
pH: 6–8.
Hardness: 2–25 dGH.
Layout: Lives on or near the bottom: floor space and hiding places matter more than height.

Calculated from this species' own FishBase record: tank size from its typical adult length and swimming zone, water values from its recorded ranges. The group guide below fills in general care.

Care guide

Species care notes

Water: a fairly wide range, from slightly acidic to slightly alkaline, 70–81 °F, pH 6–8, 2–12 dGH.
Behaviour: temperament peaceful; a shoaling fish best kept in a group of six or more; suited to a community tank.
Difficulty: Easy (Seriously Fish rating).

Short excerpts from the species profile:

Setup: “Ideally use a substrate of fine sand, although rounded gravel is an acceptable alternative provided it's kept scrupulously clean.”

From the Seriously Fish profile for this species, which has the full habitat, maintenance, diet, behaviour and breeding write-up 167

Group care guide

Corydoras and armored catfish

Applies to most species in this group. Habitat: Shallow South American streams. Individual species can differ, so compare with the species numbers above and the linked sources.

Housing & setup

Soft sand substrate, groups of six or more, and clean water.

Sources 117 119 164 118

Diet

Sinking pellets, wafers and frozen bloodworms.

Sources 117 119 164 118

Social life

Keep in groups.

Sources 117 119 164 118

Health watch

Barbel erosion on dirty or rough substrate.

Sources 117 119 164 118

Understanding the animal

About this animal

It originates in inland waters in South America, and is found in the upper Amazon River basin in Brazil, Colombia and Peru. It is named for the Rio Ampiyacu in Peru, where it was first described.

Quoted from the Wikipedia article “Spotted corydoras” (CC BY-SA 4.0) 174

In the wild

From this species’ own FishBase record (habitat, bottom type, water and breeding data), not its family. Good care copies these conditions.¹

Where it lives	Lives in freshwater. Stays near the bottom.
Water it lives in	Freshwater, 70–75 °F (21–24 °C), pH 6–8, hardness 2–25 dH.
Climate	Tropical climate.

What this means for care

Keep water within its wild range, 70–75 °F.

FishBase species summary: Corydoras ambiacus

Native climate (measured)

Warm-season highs	about 89°F (up to 92°F in the hottest sampled areas)
Cool-season lows	about 69°F (down to 64°F in the coldest sampled areas)
Average temperature	78–80°F across sampled records
Relative humidity	82–85% on average (driest month about 80%)
Rainfall	about 2571 mm a year, spread fairly evenly

Measured at 26 wild occurrence records sampled against WorldClim 2.1 climate data (1970–2000 averages). Air conditions in the range are ecological context, not enclosure settings: microhabitats such as burrows, leaf litter or basking rocks can be cooler, warmer or more humid.

From the sources

Quoted from the matching sections of reputable sources for this exact species. Specialist databases are used first; Wikipedia (community-edited, CC BY-SA 4.0) only fills gaps. Other sources are short credited quotes.

Overview

The spotted corydoras (Brochis ambiacus) is a species of freshwater ray-finned fish belonging the family Callichthyidae, the armoured catfishes, and the subfamily Corydoradinae, the corys. It originates in inland waters in South America, and is found in the upper Amazon River basin in Brazil, Colombia and Peru. It is named for the Rio Ampiyacu in Peru, where it was first described. The fish will grow in length up to 1.9 in. — Wikipedia (community-edited)

Where it lives

Home ranges Population dynamics Growth parameters Max. ages / sizes Length-weight rel. Length-frequencies Mass conversion Recruitment Abundance Life cycle Reproduction Maturity Maturity/Gills rel. — FishBase

Data and studies

The numbers

Each bar is what one source reports. Where several sources weigh in, the dashed gold band marks their average.

Adult length

Average of sources2.2in

FishBase 1641.9

Seriously Fish species profiles 1672.6

Maximum recorded length. Measured as standard length (snout to the base of the tail, not counting the tail fin). Fish in home aquariums often stay smaller than wild records.

Water temperature

Average of sources70–78°F

FishBase 16470–75

Seriously Fish species profiles 16770–81

Range the species tolerates in nature; aim for the middle.

pH

Average of sources6–8

FishBase 1646–8

Seriously Fish species profiles 1676–8

Water hardness

Average of sources2–18.5dGH

FishBase 1642–25

Seriously Fish species profiles 1672–12

Federal legal snapshot

No federal permit to keep

No federal law singles out this species for private keepers. State and local rules still apply.

State law decides most of it. Each state sets its own permits and bans for exotic, native, venomous and dangerous animals, and cities and counties can be stricter. Find your state agency →

Not covered by the Animal Welfare Act

The Act only covers warm-blooded animals. Reptiles, amphibians, fish and invertebrates have no federal care standards, even at licensed facilities; state and local rules may still apply.

Kept in captivity?

Every species on this site needs evidence that people actually keep it. For this one:

FishBase records it in the aquarium trade (Aquarium=commercial; AquariumFishII=based mainly on capture)
Has a Seriously Fish aquarium species profile

Sources for this sheet

FishBase (Froese & Pauly, eds.), version 24.07 Peer-reviewed researchThe global scientific database on fishes, maintained by a consortium of research institutions; every value is referenced.
Seriously Fish species profiles Experienced keeper or breederLong-running aquarium reference written and peer-checked by experienced fishkeepers and ichthyologists; each profile covers habitat, tank size, water, diet, behaviour and breeding.
Merck Veterinary Manual: Management of aquarium fish Zoo, university or veterinaryThe Merck Veterinary Manual: a standard veterinary reference written and reviewed by veterinary specialists.
Merck Veterinary Manual: Types and features of aquatic systems Zoo, university or veterinaryThe Merck Veterinary Manual: a standard veterinary reference written and reviewed by veterinary specialists.
Merck Veterinary Manual: Nutritional diseases of fish Zoo, university or veterinaryThe Merck Veterinary Manual: a standard veterinary reference written and reviewed by veterinary specialists.
Wikipedia (species article) Community referenceFree encyclopedia; useful overviews with their own citations. Intro text is quoted under CC BY-SA 4.0.