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New Record of Concertina Fish, Drepane Longimana (perciformes: Drepaneidae) from the St. Martin’s Island, Bangladesh

Md Sagir Ahmed
Department of Zoology, University of Dhaka, Dhaka, Bangladesh

Abu Obaida
Department of Zoology, University of Dhaka, Dhaka, Bangladesh

Sumaiya Ahmed
Department of Zoology, Jagannath University, Dhaka, Bangladesh

Gulshan Ara Latifa
Department of Zoology, University of Dhaka, Dhaka, Bangladesh

Abstract/ Executive Summary:

We report the first record of concertina fish, Drepane long mana from the St. Martin’s Island of Bangladesh. The sample specimens were collected from the St. Martin’s Island on 28 November 2015. Morphometric and meristic studies were performed for taxonomic identification. The body was oval and strongly compressed. The mouth was highly protrusible, formimg a down ward pointing tube when protruded. A single dorsal fin present with eight to nine (usually eight) spines (fourth spine largest) and 19 to 23 soft rays and the anal fins consists of three spines and 17 to 19 soft rays. The head and body were silvery in color. The presence of four to nine sub vertical dark bars on the dorsal part of the body from head to caudal fin base, easily distinguishes this species from other closely related species of genus Drepane. The morphometric and meristic data thus confirm the presence of D. longimana in Bangladesh. This report updates the geographical distribution for this species confirming its presence in the coastal region of Bangladesh and extends the number of marine fish known from the area.

Keywords: Drepane longimana, St. Martin’s Island, New record

Location: St. Martin’s Island, Bangladesh

Start Date: 28-11-2015

End Date:

Program Area: Socio-economic and Policy

Commodity: Fish

Objectives:

This study was conducted to resolve some questionable identification of Drepnae species found in the southern Island of Bay of Bengal. The presence of D. longimana was confirmed based on morphometric analysis of the sample collected from St. Martin’s Island.

Methodology:

Samples were collected on 28 November, 2015 from St. Martin’s Island (20°37'22.9" N 92°19'12.8" E). They were preserved in ice soon after collection and then kept frozen in a laboratory at -18 °C until further use. Morphometric and meristic characteristics were recorded using an FAO species identification sheet. Length was measured in cm scale.

Source of Information: International Journal of Fisheries and Aquatic Studies 2017; 5(6): 164-165

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The nearest distribution of the species is reported from the Palk Bay and Gulf of Mannar in the vicinity of Mandapam, India. No previous occurrence is documented for this species from this area of the Bay of Bengal. The present study, therefore extends the known geographical distribution of D. logimana. In this area, the species will have been unknowingly commercially exploited along with other closely related species. This new taxonomic identification will be helpful for the proper management and conservation of this species in future.

Knowledge Management: Journal