Palauan Riffle Dwarf Goby (Stiphodon pelewensis) 3-4cm

Palauan Riffle Dwarf Goby, scientifically known as Stiphodon pelewensis, is a rare and captivating freshwater fish native to Micronesia and possibly other Pacific islands. 

Appearance: Dominant males exhibit striking deep turquoise and black coloration, while females have attractive horizontal black and cream-colored stripes1.
Habitat: They thrive in shallow, clear, fast-flowing waters and require an aquarium with heavy water flow and very clean, clear water.
Diet: These gobies are biofilm and algae grazers. They may accept frozen meaty foods occasionally, but their diet should primarily consist of biofilm and algae to ensure their health.
Behavior: They are peaceful and can be kept with other small, non-aggressive fish and dwarf shrimp. However, care must be taken to ensure they are not outcompeted for food.
Reproduction: While there have been reports of them spawning in aquariums, raising the fry is challenging due to their complex larval stages.