Morphology Data of Amia calva
Identification keys
Main Ref. Jones, P.W., F.D. Martin and J.D. Hardy Jr., 1978
Appearance refers to
Bones in OsteoBase

Sex attributes

Specialized organs
Different appearance
Different colors always different colors between mature adults

Descriptive characteristics of juvenile and adult

Striking features none
Body shape lateral elongated
Cross section
Dorsal head profile more or less straight
Type of eyes more or less normal
Type of mouth/snout more or less normal
Position of mouth terminal
Type of scales cycloid scales

Branchiostegal rays: 10-12. Body is long and robust. Head is conic, mouth large, with maxillary extending well past eye; jaws wit strong, conical teeth; anterior nostrils at base of short barbels. Dorsal fin origin at 1/3 of total length; anal fin origin at midpoint of dorsal base; pelvic fins inserted at midpoint of body.

Pigmentation: Dark olive above combines with lighter color on sides to form reticulated pattern; venter cream or greenish; head yellow to brown with darker horizontal bars; lower fins vivid green; caudal light olive with irregular darker vertical bars. Adult males with prominent yellow to orange bordered black spot at upper caudal base, less intense or absent in females.

Ease of Identification

Meristic characteristics of Amia calva

Lateral Lines 1 Interrupted: No
Scales on lateral line 62 - 70
Pored lateral line scales
Scales in lateral series
Scale rows above lateral line
Scale rows below lateral line
Scales around caudal peduncle
Gill clefts (sharks/rays only)
Gill rakers
on lower limb
on upper limb
total 80 - 90


Dorsal fin(s)

Attributes extending over most of the back length
Fins number 1
Finlets No. Dorsal   0 - 0
Ventral  0 - 0
Spines total 0 - 0
Soft-rays total 42 - 53
Adipose fin absent

Caudal fin

Attributes more or less truncate; more or less normal

Anal fin(s)

Fins number 1
Spines total 0 - 0
Soft-rays total 9 - 12

Paired fins

Pectoral Attributes  more or less normal
Spines     0
Soft-rays   16 - 18
Pelvics Attributes  more or less normal
Position    abdominal  behind origin of D1
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
Entered by Luna, Susan M.
Modified by Bailly, Nicolas
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