| Main Ref. | Williams, E.H. Jr. and L. Bunkley-Williams, 1996 |
| Appearance refers to |
| specialized organs | |
| different appearance | |
| different colors | |
| remarks |
| Striking features | |
| Body shape lateral | |
| Cross section | |
| Dorsal head profile | |
| Type of eyes | |
| Type of mouth/snout | |
| Position of mouth | |
| निदान | The body has a distinct bulge near the proboscis covered with I broad band of small hooks. A second band occurs on the body between the bulge and the proboscis.The proboscis is short, club-shaped and has numerous large, uniform hooks (16- 20 usually 18 longitudinal (spiral) rows of 8-9 hooks each). Lemnisci (in adults) are elongate. The form B. thunni was distinguished because it had short lemnisci (0.8 mm long). |
| Ease of Identification |
| Lateral Lines | Interrupted: No |
| Scales on lateral line | |
| Pored lateral line scales | |
| Scales in lateral series | |
| Scale rows above lateral line | |
| Scale rows below lateral line | |
| Scales around caudal peduncle | |
| Barbels | |
| Gill clefts (sharks/rays only) | |
| Gill rakers | |
| on lower limb | |
| on upper limb | |
| सम्पूर्ण | |
| जानवरों की रीड़ का जोड़ | |
| preanal | |
| सम्पूर्ण |
| Attributes | |
| Fins number | |
| Finlets No. | पृष्ठीय |
| Ventral | |
| Spines total | |
| Soft-rays total | |
| Adipose fin |
| Attributes |
| Fins number | |
| Spines total | |
| Soft-rays total |
| Pectoral | Attributes |
| spines | |
| soft-rays | |
| Pelvics | Attributes |
| Position | |
| spines | |
| soft-rays |