Main Ref. | Anderson, W.D. and V.G. Springer, 2005 |
Appearance refers to | |
Bones in OsteoBase |
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 | |
Type of scales | |
Diagnosis |
This species is separable from all other species of the genus, except S. berryi, by the following combination of characters: segmented rays in anal fin 7, tubed lateral-line scales 50, total gillrakers on first gill arch 35-38 (10 or 11 + 25-27), sum of lateral-line scales and gillrakers on individual specimens 85-88, depth of body 20.6-24.8% SL (4.0-4.9 times in SL), length of depressed anal fin 21.8-23.9 % SL, length of anal-fin base 12.6-14.8% SL, length of first anal-fin spine 3.0-4.8% SL, hypurals 1 & 2 autogenous, hypurals 3 & 4 represented by a single plate, and first caudal vertebra without parapophyses. It can be separated from the Atlantic species S. berryi by a number of morphometric characters. It also differs slightly from S. berryi in counts of pectoral-fin rays (17 or18, mean = 17.33, for S. rhax vs. 16-18, mean = 16.99, for S. berryi). |
Ease of Identification |
Lateral Lines | Interrupted: No |
Scales on lateral line | |
Pored lateral line scales | 50 - 50 |
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 | 25 - 27 |
on upper limb | 10 - 11 |
total | 35 - 38 |
Vertebrae | |
preanal | 10 - 10 |
total | 25 - 25 |
Attributes | |
Fins number | |
Finlets No. | Dorsal |
Ventral | |
Spines total | 9 - 9 |
Soft-rays total | 10 - 10 |
Adipose fin |
Attributes |
Fins number | |
Spines total | 3 - 3 |
Soft-rays total | 7 - 7 |
Pectoral | Attributes |
Spines | |
Soft-rays 17 - 18 | |
Pelvics | Attributes |
Position | |
Spines 1 | |
Soft-rays 5 - 5 |