First record of Pyramodon lindas (Markle and Olney, 1990) (Ophidiforms: Carapidae) from Indian Seas
© Joshi et al. 2016
Received: 22 April 2016
Accepted: 6 June 2016
Published: 20 July 2016
The present report is the first record of the Pyramodon lindas (Markle and Olney, Bull Mar Sci 47: 269-410, 1990) from India waters. A specimen of Pyramodon lindas measuring 483 mm total length was obtained from Tuticorin of Gulf of Mannar which is the largest specimen of so far recorded.
The Pyramodon lindas measured 483 mm in TL, 85 mm in Head length, 18.1 mm in snout length. Body elongate, compressed to round and eel like, supramaxilla absent, anal fin origin advanced. The specimen was deposited in the National Biodiversity Museum at the Central Marine Fisheries Research Institute, Kochi (GB.220.127.116.11)
Detailed mophometric and meristic characters described and discussed.
The Pyramodon lindas reported in the present study makes the total species reported from India as four in family Carapidae. The other reports were Carapus homei (Richardson, 1846), Pyramodon punctatum (Regan, 1914), Carapus margaritiferae (Rendahl, 1921) Brotula multibarbata Temmink & Schlegel, 1846 Antennarius hispidus (Bloch & Schneider, 1801).
Gulf of Mannar is known to harbour over 3600 species of flora and fauna, making it one of the richest coastal regions in Asia. This region is also home to over 450 species of fish, 79 species of crustaceans, 108 species of sponges, 260 species of mollusks and 100 species of echinoderms. Three species in the family Carapidae, Carapus homei (Richardson, 1846) Pyramodon punctatum (Regan, 1914) Carapus margaritiferae (Rendahl, 1921) (Mahadevan, 1961) was reported from Indian seas. The genus name Pyramodon was described by Smith and Radcliffe in 1913.
They are eel like with large single vomerine fang and pelvic fin rays present. Dorsal fin originates anterior or directly over anal fin origin. They occur in shallow to deep waters of continental shelves and slopes in tropical water of Indo-west Pacific. The genus Pyramodon is mainly contains four species namely Pyramodon lindas, Pyramodon parini, Pyramodon punctatus and Pyramodon ventralis (Strasburg 1965, Gosline 1960, Trott 1981, Robins and Nielsen 1970, Cohen & Nielsen 1978, Nielsen, et al. 1999). The present study is intended to discuss morphology of Pyramodon lindas, Black edge pearl fish from Gulf of Mannar, India. The length of Pyramodon lindas (Total length 483 mm) is more than the reported maximum length of 36.0 cm TL male/unsexed Western Pacific (Markle and Olney, 1990).
Materials and methods
Morphometric characters of Pyramodon lindas from Tuticorin, Gulf of Mannar (current study)
As % HL
Head length (HL)
Snout length (SNL)
Body depth (BD)
Pre orbital length(POB)
Post orbital length (PSB)
Eye diameter (ED)
Upper jaw length (UJL)
Lower jaw length (LJL)
Dorsal fin length (DL)
Dorsal fin base length (DBL)
Pectoral fin length (PFL)
Pectoral fin base length (PBL)
Pre Pelvic fin length (PPL)
Pelvic fin length (PL)
Pelvic fin base length (PLB)
Pre dorsal length (PDL)
Pre anal length (PAL)
Snout to anus length (STA)
Anal fin length (AL)
Anal fin base length (ABL)
Body elongate, compressed to round and eel like, supramaxilla absent, anal fin origin advanced.
D30 (dorsal fin rays to 31st vertebra) 53, P1 (pectoral fin rays) 23, A30 (anal-fin rays to 31st vertebra) 50, DRAO (dorsal fin rays to anal origin) 16 and the data of the Holotype (AMS 1.22825-011) was 50, 22, 50 and 13 respectively (Markle and Olney, 1990).
Comparison of Pyramodon lindas with holotype and paratypes
Markle and Olney 1990
Holotype (mm) AMS 1.22825-011
Present specimen (mm)
Present specimen % of HL
SNL (% HL)
Lightly coloured with the exception of the dorsal and anal fin margins which are quite dark head and body are generally unpigmented. There is an unpigmented patch on the cheek that over lies the adductor mandibulae.
Difference between other species
Mainly the head and body of Pyramodon lindas are generally unpigmented. Other three species are generally pigmented. These P. lindas have 21–25 pectoral fin rays while others have more than 25 pectoral fin rays compared to other three species pectoral fin length of the Pyramodon lindas is relatively short.
The size ranges from 169 to 305 mm in TL. These are the most darkly pigmented in the species. It has paired gonads. The pectoral fin is relatively long. The main distribution area is south eastern pacific.
The size ranges from 62 to 619 mm in TL. These are moderately pigmented. The pectoral fin is relatively short. The tips of its rays falling 3–10 mm short of the posterior end of the swim bladder. P. punctatus is a species inhabiting the southern hemisphere, known from off South Africa, south eastern Australia and Newzealand at depths of 120–731 m.
The size ranges from 62 to 564 mm in TL. These are the most lightly pigmented in the genus and have a generally more delicate appearance than other species of Pyramodon. The pectoral fin is relatively long, extending 8–23 beyond the posterior end of the swim bladder. Pectoral fin length is also strongly allometric (Markle and Olney, 1981).
The species Pyramodon lindas is first described by Markle and Olney in 1990. They collected the specimen from North West shelf, Australia, 18°59’S, 117°10’E depth 300–326 m. The holotype of the species is deposited at a museum as a number of AMS1.22825–011. The geographical distribution area of the species is tropical and temperate Indo- Pacific, the habitat is marine, apparently free living at depths of 120–731 m and the size is 360 mm.
The Pyramodon lindas reported in the present study makes the total species reported from India as four in family Carapidae. The other earlier reports were Carapus homei (Richardson, 1846), Pyramodon punctatum (Regan, 1914) and Carapus margaritiferae (Rendahl, 1921) (Mahadevan, 1961). The present report on Pyramodon lindas is a new record from the Indian water adding diversity to Indian marine resources.
The authors wish to express their gratitude to the Director, Central Marine Fisheries Research Institute, Cochin and Scientist in Charge (SIC), of Tuticorin Research Centre (TRC) of CMFRI for providing for the facilities and encouragement. Authors also acknowledged to Sajan John for supporting manuscript preparation.
KKJ conceived the study and drafted the manuscript. KK collected, measured the specimens and deposited in the Museum. PUZ, JAJ & GG participated in the design, coordinated and helped to draft the manuscript. All authors have read and approved the final manuscript.
The authors declare that they have no competing interests.
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