Here are some of the most common types of "glass fish":
* Glass Catfish (Kryptopterus bicirrhis): This is a popular aquarium fish known for its elongated, transparent body. They are actually a species of catfish, not true glassfish.
* Glass Tetra (Gymnocorymbus ternetzi): This is a common freshwater aquarium fish, known for its shimmering silver scales and its see-through body.
* Glass Eel (Leptocephalus): These are the larval stage of many eel species. They are long, thin, and transparent, resembling a blade of grass.
It's important to note that "glass fish" is a general term and not a specific scientific classification.
Do you have any specific questions about a particular type of glass fish?