Redfin Algae Blenny

Same comb-toothed grazing setup as its plainer cousins, minus the plain part — the Redfin carries a streak of color through its dorsal and tail fins that most algae blennies skip entirely. It patrols rock and glass for filamentous algae most of the day, pausing to perch and survey its work between grazing runs like a tiny, opinionated groundskeeper.

Care level: Easy · Temperament: Peaceful · Max size: ~5" · Min tank: 30 gal, established algae growth · Diet: Herbivore, algae + herbivore pellets