Sicyopus discordipinnis is a freshwater goby species commonly found in clear, fast-flowing streams and rivers, especially in tropical island regions. It belongs to the Gobiidae family and is well adapted to life in strong currents, using its fused pelvic fins to cling to rocks and surfaces.

This species is known for its distinct fin coloration and streamlined body, which help it move efficiently against water flow. Sicyopus discordipinnis feeds mainly on algae, biofilm, and small microorganisms that grow on rocks, playing an important role in maintaining the natural balance of its habitat.

In the aquarium, Sicyopus discordipinnis requires clean, well-oxygenated water with moderate to strong current to mimic its natural environment. A setup with smooth rocks, stable water parameters, and plenty of grazing surfaces is essential for its well-being. Due to its specific habitat needs, this species is best suited for aquarists who are interested in river-biotope or educational aquascape aquariums.