Acanthodoras cataphractus can actually make noise, a genuinely rare trait that gave its entire family the nickname “talking catfish.” In practice, most keepers who own this species didn’t shop for it specifically. It usually arrives as an accidental extra in a shipment of a more common relative, which means plenty of people end up owning…

Acanthocobitis zonalternans does something almost none of its close relatives manage: it breeds in captivity, reliably enough that hobbyists have documented actual spawns rather than just hoping for one. In practice, that single trait sets this species apart from nearly everything else covered in this loach series so far. This guide covers what makes it…

Acanthocobitis urophthalmus is small enough to overlook, endangered enough to worry about, and popular enough in the aquarium trade that both facts matter at once. In practice, this Sri Lankan endemic occupies a genuinely tiny native range, and it’s actively commercialized as an aquarium fish despite carrying an Endangered rating from the IUCN. This guide…

Acanthocobitis pictilis only got a name in 2012, and before that, every specimen sold under the name “Cherry-fin Loach” in the hobby was actually being mislabeled. In practice, this species exists on paper specifically because someone finally checked whether the fish in the trade matched the fish the name was supposed to describe, and they…

Acanthocobitis botia gets sold under a name that, strictly speaking, belongs to fish from one river system in Assam, India, while most of what actually ships under that label comes from somewhere else entirely. In practice, that naming mess doesn’t make the fish any less worth keeping, but it does change what “authentic” even means…