Undulatory locomotion in elongate aquatic vertebrates: anguilliform
swimming since Sir James Gray.
The phylogenetic affinities of the mysterious anguilliform
genera Coloconger and Thalassenchelys as supported by mtDNA sequences.
1997; Osse & Boogaart 1999) from anguilliform
to subcarangiform, in which the caudal part of the body performs large wide movements and the rest of the body remains relatively rigid (Osse 1990).
It is found in the specimens examined of the genera Elops, Albula and Notacanthus, and cannot be discerned in the anguilliform
(due to a complete fusion between the prevomer and the mesethmoid) and saccopharyngiform (such a fusion might also occur, but this is not clear) fishes analyzed.
Ecology of anguilliform
leptocephali: remarkable transparent fish larvae of the ocean surface layer.
These efficiency values are typical for other anguilliform
swimmers that make terrestrial excursions.
In contrast, bluefish use the anguilliform
swimming mode, in which thrust is generated by muscular contractions along the body and tail (Webb, 1978).
abaster caudal rays are joined to hypurals like in anguilliform
fishes and in that species with a narrow tail fin (Schultze & Arratia).