2. Menidae (Moonfish)
■ Body very deep, almost triangular, extremely compressed;
■ Breast sharp-edged;
■ Mouth small, almost vertical, protrusible;
■ Teeth limited to villiform bands in jaws.
■ Dorsal fin single, long-based, and low, except for a short peak
anteriorly; spines thin and flexible
■ Anal fin very long-based, commencing at point of insertion of pelvic
fins, uniformly very low;
■ Caudal fin deeply forked. Pectoral fins shorter than head length.
■ Pelvic fins inserted slightly in front of pectoral fins, with I short spine
followed by 5 soft rays, the first 2 soft rays fused and greatly
elongated.
■ Body covered with minute scales invisible to the naked eye, easily
brushed off.
4. Carangidae
■ Jacks are generally coastal fishes that
actively swim in the water column.
They are convergent in many ways with
the typically more pelagic scombrid
fishes (tunas). Many jack species form
large schools that occur near reefs
where they are important predators,
especially on smaller schooling fishes.
Juveniles of many species commonly
are found in seagrass beds. Many are
important to both commercial and
recreational fisheries
5. Carangid characteristics
■ 1) anal fin with three spines, first two
detached from fin
■ 2) two dorsal fins, the second with long base
■ 3) body compressed in most species and very
deep in some
■ 4) caudal peduncle slender, sometimes with
row of lateral scutes
■ 5) caudal fin forked
■ 6) scales small, cycloid in most species, with
some species naked
6.
7.
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11.
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13.
14.
15. Leiognathidae (Ponyfishes)
■ Moderately compressed laterally
■ Maxilla concealed under the preorbital,
except for the widened posterior end which
curves downward and is tucked into a
groove beneath the eye
■ Mouth highly protrusible
■ Teeth small, punctate, arranged in 1 or
several rows
■ Trunk covered with small cycloid scales,
except for breast and, less frequently, an
area just behind head in some species;
head without scales in all but a few species
which have a patch of small scales below
eye.
16.
17.
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21.
22. Bramidae (Pomfrets)
■ Angle of jaw very oblique,
■ Dorsal fin single
■ Dorsal and anal fins of adults
■ moderately stiff, scaly, and not fully
depressible
■ Caudal fin of adults strongly forked
or with biconcave central margin,
upper lobe sometimes extended;
■ Pectoral fins falcate in adults
■ Maxilla scaly; snout, lower jaw, and
opercular and preopercular margins
naked;