Idiosepius pygmaeus

Idiosepius pygmaeus

Two-toned pygmy squid, Tropical pygmy squid

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SPECIES
Idiosepius pygmaeus

Idiosepius pygmaeus, also known as the two-toned pygmy squid, Tropical Pygmy squid, is a species of bobtail squid native to the Indo-Pacific. It occurs in waters of the South China Sea, Japan, Philippines, Palau, Indonesia, Northern Mariana Islands, as well as northern and northeastern Australia. It inhabits shallow, inshore waters.

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I. pygmaeus weighs 0.00033 g upon hatching and increases in weight to 0.175 g as it reaches maturity in 50 days (1260 degree days). It inhabits waters at a temperature of 25.2 °C. Growth rate has been calculated as 12.55 and physiological growth rate as 0.498.

I. pygmaeus grows to 20 mm in mantle length.

This species has been reared on a diet of glass shrimp (Acetes sibogae australis ) in the laboratory.

The type specimen was collected in the South China Sea (04°20′N 107°20′E / 4.333°N 107.333°E / 4.333; 107.333) and is deposited at the Zoologisk Museum of Kobenhavns Universitet in Copenhagen.

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References

1. Idiosepius pygmaeus Wikipedia article - https://en.wikipedia.org/wiki/Idiosepius_pygmaeus
2. Idiosepius pygmaeus on The IUCN Red List site - https://www.iucnredlist.org/species/162604/926579

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