First records of two species of groupers, Cephalopholis nigripinnis and Epinephelus retouti (Perciformes: Epinephelidae) from India, with a note on Epinephelids from Andaman and Nicobar Islands
Author
Rajan, P. T.
Andaman and Nicobar Regional Center, Zoological Survey of India, Port Blair - 744102, Andaman and Nicobar Islands, India; rajanpt 537 @ gmail. com
Author
Mishra, S. S.
Marine Fish Section, Zoological Survey of India, Kolkata - 700 016, India
Author
Bineesh, K. K.
Andaman and Nicobar Regional Center, Zoological Survey of India, Port Blair - 744102, Andaman and Nicobar Islands, India; rajanpt 537 @ gmail. com
text
Records of the Zoological Survey of India
2017
2017-12-01
117
3
289
294
http://dx.doi.org/10.26515/rzsi/v117/i3/2017/120972
journal article
10.26515/rzsi/v117/i3/2017/120972
2581-8686
13183753
Epinephelus retouti
Bleeker, 1868
(Redtipped grouper)
1868.
Epinephelus retouti
Bleeker,
Versl. Akad.Amsterdam
, ser.
2,
2
: 336. (
Type
locality:
Reunion
)
.
Diagnostic Characters
: D IX, 16-17; A III, 8; P 19-20; LL pored 62-74; LSS 121-140; Gill rakers 7-8 + 14-16; Pyloric caeca 39-45. Snout length 3.5 to 3.9 times in head length. Ctenoid scales on body except anterodorsally, on thorax and abdomen; numerous auxillary scales present on body; maxilla naked; caudal fin truncate to slightly rounded; pelvic fins not reaching anus. Adults dull yellowish orange to brownish red overall, usually with 5 faint dark bars on body; head mottled light red and orangish brown; lips light red; dorsal fin olivaceous to brown, the outer triangular part of each interspinous membrane deep red; remaining fins light orange red except upper caudal fin olivaceous to brown similar as the dorsal fin.
Habitat
: Mainly found in depths more than
70-200 m
, but the young ones can be observed in
15-40 m
depth.
Distribution
: Widely distributed in the tropical and subtropical Indo-Pacific region, but with scattered distribution around oceanic islands.
Remarks
:
E. retouti
is closely related to
E. fasciatus
,
E. rivulatus
and
E. irroratus
in meristic, morphometric and colour pattern. In both
E. fasciatus
and
E. rivulatus
,
snout length is shorter (4.0 to
5.1 in
head length), while in
E. irroratus
,
no dark bars on body and second dorsal spine elongated in adults. Among these four species, only
E. fasciatus
was recorded from Andamans earlier (
Day 1875
), which further differs from
E. retouti
in having tips of the interspinous dorsal-fin membranes are black, the soft dorsal fin and upper caudal-fin rays are not darker than the rest of these fins, caudal-fin margin is convex or moderately rounded (
Heemstra and Randall, 1993
). The present report forms its first record from
India
and Andaman Islands as well.