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Chaunax sea toads have a rotund, slightly laterally flattened body which tapers to a small rounded caudal fin.The head is large and globelike with a large oblique mouth and eyes set high on the head.
The sea toads were first proposed as a separate family, the Chaunacidae, by the American biologist Theodore Gill in 1863. [5] Charles Tate Regan placed this family within the division Antennariformes within his suborder Lophiodea when he classified the order Pediculati, his grouping of the toadfishes and anglerfishes. [6]
Hypnos monopterygius, also known as the coffin ray or Australian numbfish, is a species of electric ray endemic to Australia, where it is common in inshore waters shallower than 80 m (260 ft). It is the sole member of its genus Hypnos , and family Hypnidae .
Actinopterygii (/ ˌ æ k t ɪ n ɒ p t ə ˈ r ɪ dʒ i aɪ /; from Ancient Greek ἀκτίς (aktis) 'having rays' and πτέρυξ (ptérux) 'wing, fins'), members of which are known as ray-finned fish or actinopterygians, is a class of bony fish [2] that comprise over 50% of living vertebrate species. [3]
Drawing showing position of luminous organs and lateral line Adult plainfin midshipman with photophores visible. P. notatus is bioluminescent. It has photophores in the skin of its head and much of its body. One fish has over 700 photophores, each about a millimeter wide. They contain luciferin.
Midshipman fish are distinguished by their photophores and four lateral lines. Typical midshipman fishes, such as the plainfin midshipman (Porichthys notatus), are nocturnal and bury themselves in sand or mud in the intertidal zone during the day, to float just above the seabed at night. Some species have venomous dorsal spines and are capable ...
The oyster toadfish (Opsanus tau), also known as the oyster toad, ugly toad, oyster cracker, oyster catcher, and bar dog, is a Northwest Atlantic species of fish of the family Batrachoididae. The maximum length of this toadfish is 43.2 cm (17 in), but they infrequently surpass 38 cm (15 in).
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