Larvae Summary

Larvae Information Summary for Hirundichthys coromandelensis

( not available )

Main Ref:

Jeyaseelan, M.J.P. 1998

Yolk-sac larvae

	max	min	mod	Ref.
Length at birth (mm)
Preanal L. % TL

Place of development	planktonic
Larval area	Indo-West Pacific
Yolk-sac		Ref:
Yolk		Oil globules
Rows on tail	no rows
Other melanophores on tail
Measures 3.5-4.2 mm one day after hatching. Pectoral fins transparent and large.

Post larvae

Striking feature	other
Striking shape lateral	normal (not striking)	dorsal
Striking feature	other
Shape of gut	elongated
Gas bladder early		late
Spinal armature early	no spines	late	no spines
Pigmentation early
Rows on tail	no rows
Other melanophores on tail	tail completely covered with melanophores
Melanophores on head + trunk	melanophores on head + trunk
Rows on tail	no rows
Other melanophores on tail	tail completely covered with melanophores
Melanophores on head + trunk	melanophores on head + trunk
Pectorals	strikingly large with few scattered melanophores
Pelvics	strikingly large or elongated with melanophores
Snout terminal; jaws are equal in length and not protruding. Chin barbels absent. Pectoral fin rays 17, not reaching the dorsal fin origin and have not enlarged yet as 'wings'. A single unpigmented dorsal fin located posteriorly has 9 rays. Large pelvic fins located in the abdomen area reach as far as the anal fin origin.Vent is located behind the middle of the body. Anal fin origin is below the 3rd dorsal ray. Caudal fin truncate and rounded, ventral lobe developing. No lateral line visible at this stage. Pigmentation: Larva is yellowish-brown. Stellate pigment occurs densely throughout the entire body.

	L 1st feeding	Ref.	Months of presence of larvae
max			Jan	Feb	Mar	Apr
min			May	Jun	Jul	Aug
mod			Sep	Oct	Nov	Dec

Water parameters Metric characters

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