TL;DR: Jaw elongation potentially affects the functioning of the feeding apparatus in H. punctata by providing more space for the olfactory rosette, increasing biting speed and reducing drag during prey capture, suggesting that food may be obtained by powerful biting.
TL;DR: A new genus and species of congrid eel, Castleichthys auritus, is described from a single specimen collected from 396 m off northwestern Australia and is characterized by a slender and flexible tail.
Abstract: A new genus and species of congrid eel, Castleichthys auritus, is described from a single specimen collected from 396 m off northwestern Australia. It belongs to the subfamily Congrinae and is characterized by a slender and flexible tail, a free flange on the upper lip, no plicae or other ornamentation on skin of head, large eye, uniserial maxillary and mandibular teeth, and conspicuous black pectoral fins. The vertebral formula is 15-36-128.
TL;DR: A moderately elongate, light brown coloured eel, Diploconger polystigmatus Kotthaus, 1968, is reported for the first time from Indian waters.
Abstract: Present study reports a moderately elongate, light brown coloured eel, Diploconger polystigmatus Kotthaus, 1968, for the first time from Indian waters. The species is differentiated from other congridae in having the following combination of characters: double row of cephalic and lateral-line pores, dark brown strip from the middle of the supratemporal commissure up to the tip of the mouth, dorsal fin origin nearly from the halfway of pectoral fin, each dorsal fin ray have black spots at the base, pre-dorsal vertebrae 9, pre-anal vertebrae 27, total vertebrae 108. The present report also reports the genus Diploconger for the first time from Indian waters.