Key Identification Features
- Lepadogaster purpurea has a distinct tadpole-like body shape: its body is small, while its head is large and flattened, with a large mouth shaped like a duck's bill.
- The species usually has a pale line running between the eyes, and this marking can form a triangle in some specimens.
- It can be identified by 12 to 14 soft anal rays, 13 to 16 soft dorsal rays, and a complete lack of spined rays.
- Its body color ranges from brown to reddish tones, and juveniles have distinctive white bars along the dorsal side and the edge of the caudal fin.
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