Kryptopterus vitreolus (Ghost Catfish)

Kryptopterus vitreolus, also known as ghost catfish, glass catfish (common name in the aquarium trade), or even phantom catfish, is a type of catfish (order Siluriformes) whose origins come from Southeast Asia, as do their genus (Kryptopterus). They have transparent and translucent bodies as their transparent and also translucent genus, Kryptopterus. Ghost catfish can be somewhat shy, but do socialize with other non-aggressive fish.

This fish should be kept in temperatures at 68-79 °F (20-26°C), and in soft and acidic water. You can keep them along with most danios. These fish can be placid (calm) and somewhat social, including around social or calm fish. These fish are known to school with other species members, but may socialize and school temporally with other fish.

Aquarium
In aquariums, ghost catfish are known to school with the same species or other glass catfish species, like Kryptopterus minor. But it is possible for ghost catfish (as with most non-predatory fish) to school along other non-predatory or non-aggressive-acting fish, such as guppies and black mollies. Remember: Some usually non-aggressive fish (such as black mollies) may act aggressive, so not all the time putting a ghost catfish with other species always works or a good idea to try if you know that your fish are aggressive.

Commonly, people who are in the aquarium trade are known to highly suggest (or persist) to get 2 or 3 or more ghost catfish, no matter what non-aggressive fish you have. This is not necessary, but may be depending on how aggressive your fish or fishes are to other fish. You should have least one other social fish, to help it be happy.