Aquarium Fish

Indian Threadfin

posted: 05/15/12
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Indian Threadfin
Courtesy of Drs. Foster and Smith
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The Indian Threadfin, sometimes known simply as the Threadfin, is best known for how thin it is, and its dorsal, anal, and pelvic fins which have long, thread-like filaments. Its shimmering, pale greenish-silver scales are reflective.

It requires a 125 gallon or larger aquarium with peaceful tank mates of similar size, particularly those that are not fin nippers.

The Indian Threadfin diet consists mainly of bits and pieces of meaty foods that fall through the water, and occasional live items.

Jacks are members of the family Carangidae which includes 32 genera and 140 species. They are found in tropical and subtropical waters in the Atlantic, Indian, and Pacific Oceans, and may be in schools, small groups, or pairs. Jacks are laterally compressed and often silver in color. They are fast swimming carnivorous fish which, in the wild, feed most successfully at dawn and dusk, when their superior vision gives them an advantage over their prey. In the aquarium environment they need a large amount of swimming room and a diet which should include meaty foods and occasional live items.

Fish Facts

Name: Indian Threadfin (Alectis indicus)

Family: Carangidae

Range: Indian Ocean

Size: Up to 20 inches

Diet: Carnivore

Tank Set-up: Marine: Coral or rock, plants

Reef Compatible: No

Tank Conditions: 72-78°F; sg 1.020-1.025; pH 8.1-8.4

Minimum Tank Capacity: 125 gallon

Light: High

Temperament: Peaceful

Swimming Level: No specific level

Care Level: Moderate

Reproduction: Egg Spawner

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