👉 The term "hydroscaphidae" refers to a group of animals that include the following families:
1.
Hydrophaga
- This family includes small, soft-bodied animals found in water bodies such as rivers and lakes.
2.
Hydrocephala
- Also known as the "butterfly fish," this family contains many species with large heads and fins, often resembling a butterfly's wings or an octopus' tentacles.
3.
Hydrochord