Yellowstriped Cardinalfish

Overview

The Yellowstriped Cardinalfish is a small, reef-associated marine fish widely distributed across the Indo-Pacific. It is recognized for its vibrant, striped appearance and is commonly found in sheltered areas of lagoons and seaward reefs.

Distribution & habitat

This species inhabits tropical waters ranging from the Red Sea and the Persian Gulf to Mozambique in the west, extending east to Fiji and Tonga, and north to the Ryukyu and Bonin islands. They are typically found in clear, sheltered waters, often seeking refuge in caves, under ledges, or among the spines of sea urchins during the day.

Appearance

Characterized by a bluish-silver body, this fish features six distinct orange-yellow horizontal stripes, including a short stripe extending from the eye. The head area may exhibit iridescent blue tones, while the fins are generally translucent with a yellowish-orange tint. They possess relatively large eyes and mouths, which are well-adapted for their nocturnal lifestyle.

Biology & behavior

Yellowstriped Cardinalfish are primarily nocturnal, remaining in small or large aggregations in sheltered spots during daylight hours. They are known to be peaceful, often forming loose shoals in their natural environment. As paternal mouthbrooders, males play a critical role in reproduction by carrying the fertilized egg mass in their mouths until hatching, during which time they do not feed.

Feeding

This species is a nocturnal feeder that consumes a diet consisting mainly of zooplankton and small benthic invertebrates.