Gastromyzon zebrinus, often known as the Blue Tail Zebra Borneo Sucker, is a hillstream loach from Borneo that features blue dorsal, ventral, and tail fins contrasting with its yellowish body. It inhabits fast-flowing, oxygen-rich streams and is a peaceful, social fish that needs group maintenance and specific aquarium conditions.  Primarily feeds on algae and biofilm found on rocks and other surfaces. 

They are known for their ability to grip surfaces and should be kept in tanks with smooth rock and gravel substrates. Due to their unique morphology, they may attempt to climb out of tanks, so lids are recommended.