Javan Red Lipstick Goby Care Guide
Sicyopus rubicundus · Freshwater Fish

What Javan Red Lipstick Goby look like
Sicyopus rubicundus, commonly known as the Javan Red Lipstick Goby, is a diminutive, laterally compressed fish that typically reaches a maximum adult size of 3 to 10 cm. Males exhibit pronounced sexual dimorphism, characterized by a vivid red coloration on the head and distinctive 'lipstick' markings around the mouth, contrasting with the darker hues of the body. This species possesses a fused pelvic suction disc, an adaptation that enables it to cling to substrates in fast-flowing waters, a common habitat in its native volcanic island streams. The body is elongated and fusiform, with a well-developed lateral line system that aids in navigation and prey detection in turbulent environments. The dorsal fin is continuous and elongated, contributing to its streamlined shape, while the caudal fin is forked, enhancing its agility in swift currents.
Behavior & temperament
The Javan Red Lipstick Goby is primarily a benthic species, often found in the substrate of fast-flowing streams where it exhibits a solitary or loosely social behavior, depending on environmental conditions. It is not an obligate schooler but may form small groups in areas with abundant resources. Breeding behavior involves egg scattering, with females laying adhesive eggs on submerged surfaces, which males subsequently fertilize. This species is generally peaceful but can exhibit territoriality during breeding seasons, particularly among males vying for prime nesting sites. Its temperament is relatively calm, making it suitable for community tanks with similarly sized and temperamented species.
Diet & feeding
In the wild, Sicyopus rubicundus primarily feeds on algae and detritus, reflecting its herbivorous diet. In captivity, it requires a diet rich in spirulina and other high-quality herbivore flakes or pellets to ensure optimal health and coloration.
Behind the name
The genus name 'Sicyopus' is derived from Greek, meaning 'to be in a hurry', while 'rubicundus' is Latin for 'reddish', referring to the distinctive red coloration of the males.
Plan your tank
Check the numbers before you buy: tank volume, a stocking plan, cycle progress, water changes, and your ongoing care routine.
Keeping Javan Red Lipstick Goby?
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