In the aquarium, this species is at home in the water column where it is always on the hunt for zooplankton. It is especially hyperactive for a blenny. Though it does like to claim and defend a small, cave-like nest (something to provide in the aquascape!), it is generally out “in the open” and is not nearly as inclined to hide as other blennies. Unlikely behavior for a small reef fish, right? Why would such a small, colorful fish swim around so conspicuously–without apparent fear in the constant presence of hungry predators?

Yes, fang blennies actually have fangs. Two big ones in their lower jaw. And they are venomous. And just to be sure that the big fish know it, their aposematic colors/pattern serve as a clear warning of this. Rather than cause pain, the main purpose of the venom is to stun, relaxing the jaw long enough for the blenny to escape.

But never you worry, it isn’t a deadly poison. Reportedly, a bite from a striped blenny is something akin to a bee sting. Something you’d certainly prefer to avoid, but not life-threatening. The meiacanthid venom contains a neuropeptide that targets opioid receptors (interestingly, this substance is currently being studied for its potential use as a painkiller). While the venom (unlike most fish venoms) doesn’t hurt, the bite apparently does. Because of that, and the risk of a rare allergic reaction, aquarists are advised to exercise reasonable caution while handling this animal.

Striped blennies frequently “pair up” and spawn in captivity. Spawns are evident by the tiny, pinkish, adhesive eggs that line the walls of the den. While it is next to impossible to raise the brood in a home aquarium, watching the courting, spawning and brooding behaviors of the parents can be extremely interesting and rewarding. With that being said, one should only keep multiple specimens of this fish together in larger tanks; territorial disputes can result in fatalities. Even in larger tanks that house multiple striped blennies, the rockwork should include many caves and crevices to hide in.

Striped blennies (especially aquacultured specimens) are undanding in their care. Tank-bred individuals can be kept in a 20-gallon tank. A little cave to nest in and ample swimming space is all an individual needs to thrive in captivity. They are not especially finicky about water quality. Most foods are accepted greedily; they do however prefer small crustaceans such as copepods, brine shrimp, etc. While live food is of course ideal, this fish’s diet is satisfactorily supplemented with items such as Fresco Cyclops and Can O’ Cyclops. Perhaps the most important thing to remember with the species is to keep the tank lid on at all times!