|
Reference Key To Atlantic Tuna
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Species
|
Gill
Rakers on first gill arch
|
Markings
on lower body
|
Markings
on upper body
|
Trailing
Edge of Caudal Fin
|
Bottom
surface of Liver
|
Pectoral
Fin Length
|
Finlets
|
Length
(fork length) and Weight Maximum
|
|
Bluefin
|
34-43
|
Gray
spots and bands, sometimes resembles treebark
|
none
|
not
white
|
striated
|
Very
short; does not reach origin of second dorsal fin
|
Yellow
, often with narrow black margin
|
118+
inches 1000 + pounds
|
|
Yellowfin
|
26-35
|
Chains
(20+) of white streaks and spots
|
Yellow
gold band on sides, fading at death
|
not
white
|
Without
striations
|
Extends
beyond origin of second dorsal fin
|
Lemon
yellow with a very narrow black margin
|
80
inches 400 pounds
|
|
Bigeye
|
23-31
|
none
|
none
|
not
white
|
striated
margin
|
Reaches
origin of second dorsal fin
|
Yellow
with black margin
|
90
inches 450 pounds
|
|
Albacore
|
25-32
|
none
|
none
|
white
|
striated
|
Extends
beyond anal fin
|
Dorsal;
yellowish anal; silver or dusky
|
50
inches 90 pounds
|
|
Bonito
|
16-23
|
none
|
Oblique
dark stripes- seven or more
|
not
white
|
without
striations
|
very
short
|
dusky
|
36
inches 20 pounds
|
|
Skipjack
|
53-63
|
4-6
dark longi-tudinal stripes on belly
|
none
|
not
white
|
without
striations
|
Very
short and broad
|
dusky
|
40
inches 40 pounds
|
|
Blackfin
|
19-25
|
Alternating
bars and spots, light in color
|
none
|
not
white
|
without
striations
|
Reaches
origin of second dorsal fin
|
Uniformly
dusky with white margins
|
40
inches 40 pounds
|
|
Little
Tunny
|
37-43
|
Chest
spots
|
Wavy
lines on back
|
not
white
|
without
striations
|
short
and broad
|
dusky
|
40
inches 35 pounds
|
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