Key to the species of Odontamblyopus
from Murdy and Shibukawa 2003

1a. Pectoral-fin rays 40 or more……………………………………………………....2
1b. Pectoral-fin rays 33 or fewer…………………………………………….………...3
2a. Chin with numerous small barbels; pectoral-fin rays 46-65; total dorsal-fin
elements 32-35; 17 caudal vertebrae. (Pakistan, Myanmar) ……….....…O. tenuis
2b. Chin lacking barbels; pectoral-fin rays 40-51; total dorsal-fin elements 44-48;
anal-fin elements 37-42; 20-21 caudal vertebrae. (Vietnam)……….…O. Rebecca
3a. In preservative, distal margins of dorsal and anal fins tinged chocolate-brown;
dorsal surface of skull bony lacking portions of adductor mandibulae muscle;
epineurals present from 1st precaudal vertebra to 10th caudal vertebra. (west
coast of India)…………………………………………………….....….O. roseus
3b. In preservative, distal margins of dorsal and anal fins the same color as
the rest of fin but not chocolate-brown; dorsal surface of skull covered by
adductor mandibulae muscle; epineurals present from 1st precaudal
vertebra to 3rd, 4th, or 5th caudal vertebra…………… ............…….…….…4
4a. Caudal fin very long, standard length typically less than 80% of total length;
total dorsal-fin elements 40-47; anal-fin elements 33-40; caudal vertebrae
17; 3 anal- fin pterygiophores preceding first hemal spine. (east coast of
India, Bangladesh, Myanmar)……………………………....O. rubicundus
4b. Caudal fin long, standard length more than 80% of total length; total
dorsal-fin elements 44-54; anal-fin elements 36-45; caudal vertebrae
20-24; 2 (rarely 3) anal-fin pterygiophores preceding first hemal
spine. (China, Hong Kong, Taiwan, Korea, Japan)…………........O. lacepedii
   
   

 

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