How to Identify Blue-eye Cichlid

To identify Blue-eye Cichlid (Cryptoheros spilurus), look at these key features.

Physical Characteristics

Body shape

compressed

Coloration

Base body color ranges from grayish-brown to olive-green, often with iridescent blue or green scales, especially on the head and flanks. A prominent dark lateral band runs from the eye to the caudal peduncle, often broken into blotches. A distinct black spot is present on the caudal peduncle. Fins are typically translucent to yellowish, sometimes with blue or green iridescence. Breeding males exhibit more intense coloration, often with reddish or orange hues on the fins and body.

Scale type

ctenoid

Mouth position

terminal

Distinctive features

Iridescent blue or green coloration around the eyes and operculum, Prominent dark lateral band, often broken, Distinct black spot on the caudal peduncle, Males develop elongated dorsal and anal fin rays and a nuchal hump during breeding

Dorsal fin

Long, continuous dorsal fin with 16-17 spines and 9-10 soft rays. Males often have elongated posterior rays.

Tail fin

Rounded to slightly truncate caudal fin.

Pectoral fin

Well-developed, fan-shaped pectoral fins.

Distinctive fins

Anal fin with 8-9 spines and 7-8 soft rays. Pelvic fins are pointed.

Identification Tips

1. 1

   Coloration and Iridescence

   Look for the distinctive iridescent blue or green sheen, especially around the eyes and gill covers. This is a key identifier for the 'Blue-eye' Cichlid.

2. 2

   Lateral Band and Caudal Spot

   Observe the dark lateral band, which can be continuous or broken into blotches, and the prominent black spot on the caudal peduncle (the narrow part of the body before the tail fin).

3. 3

   Fin Morphology (Males)

   In adult males, note the elongated rays in the dorsal and anal fins, and the potential development of a nuchal hump on the forehead, especially during breeding periods.

4. 4

   Body Shape

   The body is moderately compressed and robust, typical of many Central American cichlids, but its specific color patterns help distinguish it.

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