Furry Diary

Not furry, but we like them anyway.

Marbled Headstander

Abramites hypselonotus

Also called Brachsensalmler

SpeciesShort profile

From South America: the Amazon, Orinoco and Paraguay-Parana basins in Argentina, Bolivia, Brazil, Colombia, Ecuador, Guyana, Peru and Venezuela12

At a glance the quick version

Length14 cm12
Sizemedium
Unusual high-backed shape
Hardy and adaptable
Characterful head-down swimming
12

Looks how to spot one

High-backed, scaled characin

A deep-bodied fish with a strongly arched back and a small head. It is marked with about eight dark vertical bands over a lighter base, giving a marbled look that varies from fish to fish. A keel runs along the belly behind the pelvic fins. Adult females are deeper-bodied than males.1

Colourssilvery to tandark vertical bandsmarbled pattern1

Personality what they are like

A lively fish that suits a large tank with robust cichlids, characins and catfish. It can nip fins, so slow fish with long fins are not ideal companions.1

Daily activity how busy a day looks

An active fish that swims head-down while picking food from the bottom, and needs plenty of room to move.1

Grooming and care the hands-on bits

Adaptable to a wide range of conditions. Suggested ranges: about 20-30 C (FishBase gives 23-27 C), pH 5.5-7.5 (FishBase gives 6.0-7.5), hardness 1-15 dGH. Keep filtration strong and water clean.12

Home where they are happiest

Tank of at least 120 cm length (about 108 litres for one fish, larger for a group) with wood and rocks; it will eat soft-leaved plants, so choose tough plants or none.1

Food basics what goes in the bowl

An omnivore that eats worms, small crustaceans, insects and plant matter. Feed quality dried foods, frozen bloodworm and daphnia, and plenty of vegetable matter such as spirulina-based foods.12

Company who they like around

Does best as a group in a large tank.1

The story where it all began

Named by Albert Guenther in 1868, it lives in muddy main channels, side streams and backwaters that flood each season. Its genus contains only two species and is set apart by the keel on its belly.12

Fun facts for the dinner table

  1. 1

    Its belly carries a keel behind the pelvic fins, a feature that sets its genus apart.1

  2. 2

    Its genus, Abramites, has only two species.1

  3. 3

    It ranges from Venezuela all the way south to Argentina.1

  4. 4

    In the wild, breeding pairs spawn among dense vegetation.2

Recognised by the official bits

IUCN Red List
Least Concern (assessed April 2020)2
FishBase
Described by Guenther in 18682

The care rhythm Furry Diary remembers it for you

A typical home-care rhythm for a Marbled Headstander. It is our own starting plan, not a vet's advice, and you can change every line in the app.

Start a free diary

You might also like

our little thank-you jar

Like what we are building? Buy us a coffee.

The breed atlas is free for everyone, with a source on every fact, and it will never show ads. If it helped you, a small tip keeps the research going. Any amount is lovely, and no is a perfectly fine answer too.

Leave a tip

Where this comes from

Every breed page shows where each fact comes from. If we got something wrong, sorry, we are pet people, not a science magazine. Tell us at [email protected] and we will fix it.

  1. Abramites hypselonotus - Seriously Fish seriouslyfish.comused for origin, size, care, diet, behaviour, appearance
  2. Abramites hypselonotus summary - FishBase fishbase.seused for size, water parameters, IUCN, diet

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