Marbled talking catfish
Amblydoras nauticus
Also known as Marble talking cat
Care at a glance
- Temperature
- 73–82°F (23–28°C)
- pH
- 6.0–7.5
- Adult size
- 4.3 in (11 cm)
- Minimum tank
- 30 gal (112 L)
- Temperament
- Peaceful
- Social behavior
- Social
- Swim level
- Bottom
- Difficulty
- Medium
- Breeding
- No record
- Rarity
- Rare
- Origin
- Upper Amazon, Peru
- Family
- Doradidae
Overview
A small, sociable armored catfish that is happy in company, so keep a few together and they will often pile up in the same shelter by day. It is peaceful and community-safe with calm fish of similar size, and its modest 11 cm adult size makes it manageable. Provide leaf litter, driftwood, and shaded caves over a soft floor, and keep the lighting low. Feed sinking pellets, wafers, and small frozen foods after dark, when it does most of its foraging. A group settles well in a tank of around 112 liters.
In the wild
Amblydoras nauticus is endemic to the upper Amazon of Peru, where it shuffles through leaf litter and soft sediment in slow, shaded water. A tank that mirrors this has a soft sand base, a layer of botanicals or leaf litter, driftwood, and gentle filtration. Keep it warm at 23-28 C and soft to neutral, around pH 6-7.5. Dim light and plenty of cover bring out its natural, unhurried foraging.
Good to know
This thorny catfish of the family Doradidae reaches only about 11 cm and wears a mottled brown, marbled pattern. It was described by Edward Drinker Cope in 1874. In shops it is very often mislabelled as Amblydoras hancockii, a name that actually belongs to a different fish. Like its relatives it produces audible clicks with its pectoral spines. There is no record of it spawning in aquaria.
Did you know
The species name nauticus points to Nauta, the small river port in Peru near where the first specimens were collected; despite the seafaring sound of the word, this is a freshwater fish of the upper Amazon.
Tank mates
Marbled talking catfish is a peaceful, social species that keeps to the bottom. These picks match on water type, temperature, pH, size and temperament.

Three-lined bagrid
Tachysurus trilineatusFreshwater3.1 in (8 cm)30 gal (112 L)64–77°F (18–25°C)Kallman's swordtail
Xiphophorus kallmaniFreshwater4.1 in (10.5 cm)29 gal (110 L)73–82°F (23–28°C)
Mees' antenna catfish
Brachyrhamdia meesiFreshwater2.4 in (6 cm)30 gal (112 L)73–82°F (23–28°C)Dwarf distichodus
Distichodus decemmaculatusFreshwater3 in (7.5 cm)30 gal (112 L)73–81°F (23–27°C)
Moolenburgh's glass catfish
Pseudeutropius moolenburghaeFreshwater3.9 in (10 cm)30 gal (112 L)73–82°F (23–28°C)
Senegal kuhli cat
Amphilius rheophilusFreshwater4.7 in (12 cm)30 gal (112 L)70–79°F (21–26°C)
Common questions
What size tank does a Marbled talking catfish need?
A Marbled talking catfish needs at least 30 gal (112 L). It spends most of its time in the bottom.
What temperature and pH do Marbled talking catfish need?
Marbled talking catfish are comfortable at 73–82°F (23–28°C) with a pH of 6.0–7.5.
How big do Marbled talking catfish get?
An adult Marbled talking catfish reaches about 4.3 in (11 cm).
Where to buy
Some links may not be the exact species or variety.
…or ask your local fish store.
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Related species
Painted talking catfish
Acanthodoras cataphractusFreshwater4.5 in (11.5 cm)30 gal (112 L)73–82°F (23–28°C)Parrot doradid
Rhynchodoras woodsiFreshwater4.1 in (10.5 cm)53 gal (200 L)73–82°F (23–28°C)
Gallagher's catfish
Rhinodoras gallagheriFreshwater5.9 in (15 cm)70 gal (265 L)73–82°F (23–28°C)
Orinoco spotted raphael
Agamyxis albomaculatusFreshwater5.9 in (15 cm)40 gal (150 L)73–82°F (23–28°C)
Spotted raphael catfish
Agamyxis pectinifronsFreshwater5.9 in (15 cm)40 gal (150 L)72–79°F (22–26°C)Hancock's talking catfish
Platydoras hancockiiFreshwater5.9 in (15 cm)53 gal (200 L)73–82°F (23–28°C)
