Twinspot Bimaculatus Blenny

The Twinspot Bimaculatus Blenny (Ecsenius bimaculatus) is a peaceful species that is reef-safe, admired for its slender body, distinct twin black spots near the base of the dorsal fin, unique facial markings, and algae-grazing habits.

Males typically are slightly larger and may display stronger coloration or territorial behaviors during breeding, while females/juveniles tend to be smaller with more subdued patterns.

They reach about 2.5–3 inches in adult size and should be housed in aquariums of at least 30 gallons. Provide plenty of live rock for grazing and hiding spots, along with open swimming space. Keep stable water parameters (salinity ~1.020-1.025, temperature ~72-79°F, pH ~8.1-8.4), and use a secure lid since this species can jump.

Diet should consist of algae (film and macro), spirulina, mysis shrimp, enriched brine shrimp, copepods, and high-quality herbivore pellets. With proper care, this fish makes a hardy and attractive addition to reef and community aquariums.

International Aquatics Quarantine & Guarantee: All fish are checked by marine vets, given a formalin bath, and held for 14 days in copper-treated systems. We feed Selcon-soaked food with Kanaplex and Metroplex during quarantine. Unless marked, all livestock comes with our 15-Day Guarantee. You will receive a video of your fish eating before shipment. On request, we also send photos/videos after arrival at IA. Some species are import-to-order (3-10 business days). Many common species are already cleared or near the end of QT.

Several species will be import-to-order and may take anywhere from 3-10 business days to secure. Once your fish is secured, you will be notified, and the quarantine process will then begin.