This is one of three similar-looking species that have traditionally been regarded as members of the genus Hoplosternum. In 1997 a review resulted in their being split into three distinct genera: Hoplosternum, Lethoplosternum, and Megalechis. Of the three, Cascudo Hoplo was the only species left within its original genus. It is the largest of the three species and may also be distinguished by its lightly forked caudal fin. Owing to its wide distribution, a number of variants are known, but whether they are morphs or separate species remains to be decided.
- Widely distributed in tropical South America.
- Up to 8 3/4in (22cm). Behavior: Generally peaceful except at spawning time.
- Wide range of foods accepted.
- Roomy, well covered, with plenty of resting and hiding places and subdued lighting. Water chemistry not critical. Temperature range: 70-79 F (21-26 C); slightly higher for breeding.
- Male builds bubble nest at the water surface. Eggs are deposited among the bubbles and are guarded by male. Hatching takes 3-4 days.