Loaches · Hillstream loaches

Gastromyzon sp. "Blue Zebra"

Blue zebra hillstream loach, Bluefin zebra hillstream loach, Double blue zebra hillstream loach

1 cited source

IUCNNOT EVALUATED
NEnot on the EX–LC scale
CARESNOT LISTED
Genus type speciesGastromyzon borneensisGünther 1874
Depth—not recorded
DietNot documented for this form; genus members graze biofilm (genus-level).
BreedingNot documented for this form
Sexual dimorphismNot documentedNot documented for this form.
PhotographsSee photosGoogle Images →

Gastromyzon sp. "Blue Zebra" is an undescribed Bornean hillstream loach sold as the blue zebra hillstream loach. It is not Gastromyzon zebrinus.

What's in the name

Gastromyzon sp. "Blue Zebra" — gas-troh-MY-zon

Gastromyzon
  • gasterGreek — stomach, belly
  • myzonGreek — sucking
"Blue Zebra"
  • Blue Zebratrade label — a trade label; what it refers to is not documented

Taxonomy & naming

This is an undescribed form: no scientific name, authority or type material stands behind it, and its identity and range are not documented in the sources the atlas uses. "Blue Zebra" is a trade label, also seen as Bluefin or Double Blue Zebra at other sellers. It is not the described Gastromyzon zebrinus.

Morphology

Neither seller text held by the atlas describes colour in detail; the name suggests a barred pattern. Gastromyzon are small hillstream loaches of Borneo with a flattened body and broad paired fins that act as a sucker on rocks in fast water (genus-level).

Habitat

No collection locality is given in the Dan's Fish listing. Hobby sellers describe it as a Bornean form.

Feeding

Gastromyzon graze algae and the small animals living in the biofilm on stones (genus-level); the seller gives no diet for this form.

Mating

Spawning of this form is not documented.

Breeding

No captive-breeding record for this form is held by the atlas. Dan's Fish lists the stock as harvested from nature.

In the aquarium

Dan's Fish ships fish of about 1 to 2.5 in and gives an adult size of around 2.5 to 3 in. It describes hillstream loaches as needing flowing, well-oxygenated water, with surfaces to cling to.

Conservation

No IUCN assessment exists for this undescribed form. Its range and numbers are not documented, so its conservation status cannot be stated.

Sources

  1. Dan's Fish trade listing: Blue Zebra Hillstream Loach
  2. Nautilus Tropical Fish trade listing: Blue Zebra Hillstream Loach (Gastromyzon sp.)

Last reviewed 2026-10-05.

How to cite

Aquarist Atlas (2026). Gastromyzon sp. "Blue Zebra". Aquarist Atlas.https://www.aquaristatlas.com/loaches/gastromyzon-sp-blue-zebra/

Add this species card to your site

Paste this into a product listing, club page or blog post. It shows this species’ size, water ranges and conservation status, kept current from the atlas, with a link to this page. Free to use; keep the link intact, as it is the attribution. How the card works.

<div data-atlas="species/gastromyzon-sp-blue-zebra"><a href="https://www.aquaristatlas.com/loaches/gastromyzon-sp-blue-zebra/">Blue zebra hillstream loach (Gastromyzon sp. "Blue Zebra") on Aquarist Atlas</a></div>
<script src="https://www.aquaristatlas.com/embed/v1/card.js" async referrerpolicy="no-referrer"></script>
← All loaches