Red Sea Zebra Masked Swallowtail Angelfish Female

Genicanthus caudovittatus, commonly known as the zebra angelfish, swallowtail angelfish, and lyretail angelfish, is a species of marine ray-finned fish belonging to the family Pomacanthidae. This striking fish is found in the Indian Ocean. Let’s dive into some fascinating details about this beautiful creature:

1. Description:

   • Sexual Dichromatism: Male specimens of Genicanthus caudovittatus exhibit distinct coloration compared to females. Here’s how they differ:
     • Males: Whitish-blue with vertical dark brown barring and a black band along the middle of the dorsal fin base.
     • Females: Pale pinkish-grey with a black band over the eye and additional black bands on the upper and lower margins of the caudal fin. Both sexes have a markedly forked caudal fin.
   • Fin Details: The dorsal fin contains 15 spines and 15–17 soft rays, while the anal fin has 3 spines and 17–19 soft rays. The maximum total length of this species is approximately 20 centimeters (7.9 inches).

2. Distribution:

   • Genicanthus caudovittatus is distributed in the western Indian Ocean:
     • Along the eastern coast of Africa from the Red Sea in the north to KwaZulu-Natal in South Africa.
     • Eastward to Madagascar, Maldives, and Réunion.
     • It has also been recorded from Weh Island off northwestern Sumatra.

3. Habitat and Biology:

   • Depth Range: Found at depths between 15 and 70 meters (49 and 230 feet).
   • Habitat: Prefers steep outer reef slopes where it forms small groups consisting of a male and a few females.
   • Diet: Feeds on plankton.
   • Juveniles inhabit greater depths than the adults.

4. Systematics:

   • Genicanthus caudovittatus was first formally described in 1860 by the German-born British ichthyologist and herpetologist Albert Günther. The specific name combines “caudus” (meaning “tail”) and “vittatus” (meaning “banded”), referring to the black markings on the tail.

5. Utilization:

   • Occasionally appears in the aquarium trade.

Next time you encounter a zebra angelfish, appreciate its intricate patterns and graceful presence in the underwater world!