Ophidium imberbi = pearl fish (Carapus acus)
Channa orientalis = Ceylon snakehead (Channa orientalis)

Carapus acus syn. Ophidium imberbi, Channa orientalis
Date 1801
Source https://www.flickr.com/photos/biodivlibrary/6892438868
Author Bloch, Marcus Elieser; Hennig, J. F.; Schneider, Johann Gottlob
Full title M.E. Blochii ... Systema ichthyologiae iconibus CX illustratum / post obitum auctoris opus inchoatum absoluit, correxit, interpolavit Jo. Gottlob Schneider, Saxo.
Page numbers Plate 90
BHL Page URL https://www.biodiversitylibrary.org/page/38785836
Source: https://commons.wikimedia.org/wiki/File%3AM.E._Blochii_..._Systema_ichthyologiae_iconibus_CX_illustratum_%28Plate_90%29_%286892438868%29.jpg


-- Ophidium imberbi = pearl fish (Carapus acus) --
The pearl fish or pearlfish (Carapus acus) is a species of bony fish in the family Carapidae, the pearlfishes, and is native to the Mediterranean Sea and the Atlantic Ocean. It lives as a commensal in association with a sea cucumber, spending the day inside its host and emerging at night to feed. Order: Ophidiiformes > Family: Carapidae > Genus: Carapus > Species: Carapus acus


-- Channa orientalis = Ceylon snakehead (Channa orientalis) --
The Ceylon snakehead or walking snakehead (Channa orientalis) is a species of snakehead found in freshwater habitats, typically shaded streams, in southwestern Sri Lanka. The Ceylon snakeheads are predatory fish that feed on plankton, insects, and sometimes small amphibians. They can breathe on land for short periods of time because they have accessory respiratory organs through which they can use atmospheric oxygen to breathe. During wet weather, they can survive on land for more than four days, but if their bodies dry up, they die because it becomes difficult for them to exchange atmospheric oxygen. The Ceylon snakehead is a mouth brooder like many Channa species. Order: Anabantiformes > Family: Channidae > Genus: Channa > Species: Channa orientalis