Carcharhinus macloti


Hardnose shark CCM
Characteristic features:
Colour:

Dorsal surfaces bronze, fading to greyish brown after death; a faint pale stripe on each side. Fins lacking distinct markings; posterior margins of some fins sometimes pale-edged. Ventral surfaces almost white.

Size:

Maximum size up to 110 cm TL; birth size 31–40 cm TL.

Distribution:

Found throughout the tropical Indo–West Pacific.

Habitat:

Occurs close inshore down to a depth of at least 170 m depth.

Biology:

Feeds primarily on bony fish, but also cephalopods and crustaceans. The only Carcharhinus species to have a hypercalcified rostrum, which can be felt by pinching the snout, most evident in larger individuals. Sometimes forms large sexually segregated aggregations. Length at maturity is at 70–89 and 69–74 cm TL for females and males respectively. Females breed every 2 years and have a viviparous with yolk-sac placenta reproductive mode. The gestation period lasts about 12 months before giving birth in July to 1–2 (usually 2) pups. Attains a maximum age of at least 12 years.

Indonesian fisheries:

Caught occasionally by inshore demersal gillnet fisheries. Utilised for its fins and meat, but of limited value due to its small size.

Similar species:

A distinct species clearly separable from other Carcharhinus species which differ by having the second dorsal-fin origin level with anal-fin origin (vs. second dorsal-fin origin level with the anal-fin midbase).

Rhizoprionodon spp.

Rhizoprionodon acutus
Rhizoprionodon acutus

Rhizoprionodon differ in having an anal fin much larger than second dorsal fin (vs. second dorsal fin and anal fin similarly sized) and an anal-fin posterior margin that is almost straight (vs. deeply notched).

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