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The pelvic fins are usually present, directly below or a little ahead of the pectoral
fins, and they are supported by one spine and five or fewer soft rays. This position
of the pelvic fins gives the perciforms an advantage in manoeuvring over short ...
Superfamily Blennioidea (tropical blennies) All soft, articulated fin rays in the
dorsal, anal, and pelvic fins unbranched; pelvic fins, which are seldom reduced,
of 1 spine and 4 or fewer rays and located in front of the pectoral fins; there are
es; dorsal fin high and short-based, not extending beyond middle of body; caudal
fin with high lobes; second dorsal fin small; pelvic fins absent; no teeth in jaws
except in very young; no scales. Probably only 1 species, Xiphias gladius, ...
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The New Encyclopaedia Britannica (Encyclopaedia)User Review - Not Available - Book Verdict
For virtually all its 238 years,Britannica has ruled the shelves as a peerless general encyclopedia. Reviewers have consistently given it high marks for most of the 12 criteria identified inKister's ... Read full review