About the Freshwater Top Hat Blenny
name: freshwater top hat blenny (omobranchus fasciolaticeps)
max size: up to 4 inches
water parameters: pH 7.0-8.2, temperature 74-82°F, moderately hard to hard water; freshwater to mildly brackish conditions may be tolerated, but the ideal salinity should be confirmed for the collection locality
diet: omnivorous – feeds on algae, biofilm, small crustaceans, worms, and other aquatic invertebrates; offer a varied diet of algae wafers, spirulina-based foods, frozen brine shrimp, mysis shrimp, and bloodworms
temperament: generally peaceful toward unrelated fish but territorial toward other blennies and similar bottom-dwelling species, especially when competing for hiding places
tank setup: aquarium of at least 20 gallons with plenty of smooth rocks, caves, driftwood, and crevices for shelter; provide moderate water circulation, excellent filtration, well-oxygenated water, and a tightly fitting lid to prevent escapes
compatibility: suitable with peaceful community fish that occupy the middle and upper water levels; avoid aggressive bottom dwellers, large predatory fish, and other territorial blennies unless the aquarium provides sufficient space
behavior: spends much of its time perched on rocks, exploring crevices, and darting between hiding places; uses its pectoral fins to support itself while resting and frequently watches its surroundings from sheltered positions
fun fact: the freshwater top hat blenny gets its common name from the distinctive raised structures on its head that resemble a tiny hat. Unlike many familiar marine blennies, omobranchus fasciolaticeps is associated with coastal and estuarine habitats, making it an unusual addition to the aquarium hobby.
