Yellow Teardrop Butterflyfish – Facts and Photographs

yellow teardrop butterflyfish, Chaetodon interruptus

The Yellow Teardrop Butterflyfish ( Chaetadon interuptus) is not common in Tanzanian coastal waters, but neither is it rare. They obtain their name from their background color and the teardrop shape on the side of the body.

yellow teardrop butterflyfish, Chaetodon interruptus

APPEARANCE

The body is laterally compressed and disc shaped as with all the Butterflyfish. The body is a bright yellow color with light chevron shaped lines running down the body. In the mid upper body there is a teardrop shaped marking. In the small juveniles there is a white ring around the mark which is rounder and not teardrop shaped. This can be seen in the image below. There is often a blue tint to the mark which dissapears as the fish ages.With the more mid sized fish as pictured above, the white outer marking goes yellow and the mark begins changing into a teardrop shape.

Yellow Teardrop Butterflyfish ( Chaetadon interuptus)

There is a black vertical line through the eye and a further black mark with a white edge along the rear of the dorsal and anal fins which runs across the caudal area. They grow up to 20 cm but are usually around the 15 to 17cm mark.

yellow teardrop butterflyfish, Chaetodon interruptus

YELLOW TEARDROP BUTTERFLYFISH IN THE WILD

The Yellow Teardrop Butterflyfish is often seen in small groups of five to six fishes. They move across the reef feeding but usually stick low on the bottom and are quick to move into cover. They are nearly always in pairs and it is seldom that they are seen singularly. Sometimes they appear to follow groups of juvenile Parrotfish and Goatfish feeding on the reef, but they never stay with these feeding groups for long.

yellow teardrop butterflyfish, Chaetodon interruptus

HABITAT

Their range extends from Port Alfred in the Eastern Cape Province of South Africa northwards to Somalia and across to Sri Lanka. They are absent from the Red Sea and north western Indian Ocean. Areas rich in corals on semi exposed seaward reefs seem to be their favourite spots. In Tanzanian coastal waters they are usually seen in depths of 10 to 20 meters on reef tops.

yellow teardrop butterflyfish, Chaetodon interruptus

[/divider]DIET[/divider]

Yellow Teardrop Butterflyfish feed on hard and soft coral polyps as well as sponges, worms and various algae.

yellow teardrop butterflyfish, Chaetodon interruptus

REPRODUCTION

Yellow Teardrop Butterflyfish form monogamous pairs and keep the same mates although they will find a new mate if one dies. The female swells with eggs and spawning takes place by scattering into the water table with the male fertilizing the eggs.

Spawning is thought to take place in relation to the lunar cycles but this is not certain. The eggs are spherical and buoyant and it is thought they hatch in 28 to 30 hours. Once the eggs hatch a bony plate forms over the head area and the larvae called tholichthys, are pelagic for quite some time. They slowly develop into  juveniles. This phase makes it extremely difficult to breed them in aquariums.

yellow teardrop butterflyfish, Chaetodon interruptus

AQUARIUMS

Because of their penchant for coral polyps and sponges, the Yellow Teardrop Butterflyfish does not do well in aquariums. It is extremely difficult to replicate this diet in aquariums.

Yellow Teardrop Butterflyfish ( Chaetadon interuptus)

YELLOW TEARDROP BUTTERFLYFISH CLASSIFICATION

Kingdom:Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Perciformes
Family: Chaetodontidae
Genus: Chaetodon
Species: C. interuptus

 

LITERATURE CITED

Allen, Gerald R. 1979. Butterfly and Angelfishes of the World. Vol. 2. Aquarium Systems, OH. 203 pp.

Burgess, Warren E. 1978. Butterflyfishes of the World; A Monograph of the Family Chaetodontidae. T.F.H. Publications, NJ.832 pp.

The Reef Guide: Southern Africa’s East and South Coasts
Dennis King and Valda Fraser

The butterflyfishes: success on the coral reef
edited by Philip J. Motta

http://www.iucnredlist.org/details/full/165684/0

EQUIPMENT USED

Canon 7D

Ikelite 7D Housing

Twin Ikelite DS 161 Strobes

Flat Ikelite Lens Port

Ikelite Dual Synch Cord 

Ikelite 5.1 inch Port body

 

 

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