We invite you to read our article the anatomy of fish to leanr more about such a topic The throat and belly have a uniform white silver tone, while the body possesses several black ocelli bordered of yellow and another smaller located on both sides, at the beginning of the caudal fin. There is no apparent sexual dimorphism and the dominant color of this species ranges from the yellow-green, in the upper part of their body to the brown olive on their back. On the other hand, it is important to point out that the dorsal and pectoral fins are highly effective motor organs that give Puffer fish a very agile swimming, and even quickly modify the direction of their displacement. They lack pelvic fins, and their tiny dorsal fin is located at the bottom of their back close to the caudal appendix. Their eyes are quite large and black, with bluish minks, being rounded by a golden or copper iris and can be confused with the ocelli that dot their body. However, their most outstanding characteristics are the innumerable thorns which cover their body except for their mouth. Their size can reach a length close to 20 cm, although in captivity hardly exceed 10. Puffer fish have a sturdy body with a large, bulky and wide head.
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