Not furry, but we like them anyway.

Striped Raphael Catfish

Platydoras armatulus (Valenciennes, 1840)

Also called Southern striped Raphael, Talking catfish, Chocolate doradid, Chocolate catfish, Thorny catfish

SpeciesShort profile

From South America: the Amazon, Paraguay-Parana and lower Orinoco basins, often over sandy or soft river bottoms.1 2

At a glance the quick version

Length20 to 43 cm1 2

Sizemedium

Makes audible 'talking' sounds

Peaceful toward similar-sized fish

Hardy and easy to feed

3 1

Looks how to spot one

Armoured thorny catfish

A stocky catfish with a row of small curved bony spines along each side and very stiff pectoral fin spines. Its dark body carries a bright pale stripe that runs from the head along the flank.1

Coloursdark chocolate-toned bodypale lengthwise stripe from head to tail1 3

Personality what they are like

Calm, unaggressive and fairly secretive, it spends the day tucked away and comes out after dark.3 1

Daily activity how busy a day looks

Not very active; mainly a night-time forager that burrows into soft bottoms.3 1

Grooming and care the hands-on bits

Do not use a net, as its spines snag easily; move it with a container instead. Provide caves and a soft sandy bottom.1 3

Home where they are happiest

Tropical water of 24 to 30 C, pH 5.8 to 7.5 and hardness 2 to 20 dGH, in a tank with a base of at least 120 x 30 cm.3

Food basics what goes in the bowl

Omnivore: sinking pellets as a staple plus bloodworm and small earthworms, fed after lights out. In the wild it eats molluscs, crustaceans and organic debris.3 1

Company who they like around

Gets on with medium to large peaceful fish and tolerates its own kind in groups; very small fish may be eaten.3 1

The story where it all began

Valenciennes described it in 1840, and for many years it was mixed up with Platydoras costatus. It has been a long-standing favourite in the aquarium hobby, where nearly all fish are wild-caught.1

Fun facts for the dinner table

1
Its 'talking' sounds come from grinding its pectoral spines, amplified by the swim bladder.3
2
Young fish have been seen cleaning larger predatory fish, and their stripes may act as a 'cleaner' badge.1
3
Unusually large individuals up to about 43 cm have been reported from the Tocantins-Araguaia basin.1
4
In the wild it burrows into soft river bottoms and is often found over sand.1

Recognised by the official bits

IUCN Red List: Least Concern (assessed 5 August 2020)2
Taxonomy: Described by Valenciennes in 1840 as Doras armatulus; long confused with Platydoras costatus1
Family: Doradidae (thorny catfishes)2

The care rhythm a typical week and year

A typical home-care rhythm for a Striped Raphael Catfish. A starting point, not a vet's advice.

Feedingevery day
Water changeAbout 30 to 50% of the waterevery week
Water testevery week
Filter rinseevery 2 weeks

Owner questions the things everyone asks

How often should I feed my Striped Raphael Catfish?

Feed your Striped Raphael Catfish once a day, ideally after lights out since it is nocturnal. Furry Diary's starting plan suggests daily feeding. Adjust portions based on your fish's appetite and the food label, and ask your vet if unsure.3 1 Pet Wiki plan

What does a Striped Raphael Catfish eat, and what should it never eat?

This omnivore enjoys sinking pellets as a staple, plus bloodworm and small earthworms. Never feed it anything that could harm its spines or that is not designed for aquarium fish. Always check with a good breeder or vet for specific foods.3 1

How much space does a Striped Raphael Catfish need?

A tank with a base of at least 120 x 30 cm is recommended. This gives enough room for its secretive nature and burrowing. For exact sizing, consult a good breeder or exotic-pet vet.3

What temperature, light or water does a Striped Raphael Catfish need?

Keep tropical water at 24 to 30°C, pH 5.8 to 7.5, and hardness 2 to 20 dGH. Provide dim lighting and plenty of caves, as it is shy and nocturnal. Test water weekly as per Furry Diary's plan.3 Pet Wiki plan

How often should I clean a Striped Raphael Catfish's home?

Furry Diary's starting plan suggests a weekly water change of about 30 to 50% and a filter rinse every two weeks. Always use a container to move the fish, never a net, to avoid spine snagging.1 Pet Wiki plan

Can a Striped Raphael Catfish live with others?

Yes, it gets along with medium to large peaceful fish and can be kept in groups of its own kind. Avoid very small fish as they may be eaten. Always monitor new tank mates.3 1

How long does a Striped Raphael Catfish live?

Lifespan varies depending on care and environment. For a specific estimate, ask a good breeder or an exotic-pet vet who knows your fish's history.

Can I handle a Striped Raphael Catfish?

Handling is not recommended because its spines can snag easily and cause injury. Always move it with a container, not a net, and avoid unnecessary contact.1

Written from the sources on this page, a few checked guides (VCA, ASPCA, RSPCA) and Pet Wiki's own starting care plan. A friendly guide, not a vet's advice.

Spotted Raphael Catfish

Where this comes from

Every fact on this page has a numbered source. Spotted an error? [email protected].

Wikipedia: Platydoras armatulus en.wikipedia.orgused for names, distribution, appearance, diet, behaviour, history
FishBase: Platydoras armatulus fishbase.seused for size, IUCN, family
Seriously Fish: Platydoras armatulus seriouslyfish.comused for tank size, water parameters, diet, compatibility, sound production

Checked 2026-09-30. Text is written in our own words from these sources.