Rhinogobius formosanus – ~8 cm Formosa Brook Goby Nothobranchius rachovii Dim or turn off your

Dim or turn off your aquarium lights during introduction to help avoid any territorial issues or aggression from tank mates

Tank size: 40 gallons minimum for a small group (larger preferred)

and playful swimming make them a favorite among aquarists

Habitat: Prefers fast-flowing

Rhinogobius formosanus – ~8 cm Formosa Brook Goby Nothobranchius rachovii Dim or turn off yourDescription The Formosa Brook Goby (Rhinogobius formosanus, Oshima 1919) is a sleek, freshwater goby native to Taiwans northern rivers. It typically grows to about 8 cm standard length, with males exhibiting vibrant orange red facial markings, distinctive diagonal head lines, and striking blue green sheen on their body scales. This species is known for its graceful movement, subtle aggression during dominance displays, and its adaptabilityincluding