Whitepatch Splitfin
Allodontichthys hubbsi
Also known as: Whitepatched Splitfin
A rare Mexican livebearer from a single river system, seldom seen in the hobby.

About
The Whitepatch Splitfin (Allodontichthys hubbsi) is one of those species that feels like a genuine find when you come across it. Endemic to the state of Jalisco in western Mexico, this small livebearer belongs to the splitfin family, a group that reproduces through a unique internal structure rather than the placenta-like connection seen in more familiar livebearers like guppies or mollies. The common name hints at a pale patch in the coloration, though this is not a fish people keep for flashy looks. It carries a quiet appeal that draws in hobbyists with a taste for the unusual and the conservation-minded. Because it comes from such a geographically restricted range, wild populations face real pressure from habitat loss and introduced species, which gives captive keeping a meaningful dimension beyond just the hobby side of things. Care sits at an intermediate level, so this is not the best choice for someone just starting out, but it is not demanding in a way that should intimidate anyone with a bit of experience under their belt. A well-maintained, stable setup with some plant cover suits it well. You are unlikely to find this one at a chain store, but specialist groups and livebearer societies are your best bet for tracking down a small group.
Similar species
Other fish you might consider
Good tank mates
Species that tend to coexist peacefully with Whitepatch Splitfin
From the same region
Share the same natural habitat. Great for a biotope-themed tank
Frequently asked questions
- How big does the Whitepatch Splitfin get?
- The Whitepatch Splitfin reaches about 1.5–2.5" as an adult.
- What size tank does the Whitepatch Splitfin need?
- A minimum of 15 gallons is recommended for the Whitepatch Splitfin.
- What water parameters does the Whitepatch Splitfin need?
- The Whitepatch Splitfin does best with a temperature of 70–82°F, a pH of 7–8, hardness around 5–20 dGH.
- Is the Whitepatch Splitfin aggressive?
- The Whitepatch Splitfin is generally peaceful and suits a community tank with similarly calm tankmates.
- What does the Whitepatch Splitfin eat?
- The Whitepatch Splitfin is an omnivore. It does well on a varied diet of quality flake or pellet plus occasional frozen or live foods.
- How long does the Whitepatch Splitfin live?
- With good care, the Whitepatch Splitfin typically lives 3-5 years.