How to Identify Slender Nannochromis

To identify Slender Nannochromis (Nannochromis parilus), look at these key features.

Physical Characteristics

Body shape

elongated

Coloration

Males typically exhibit iridescent blue or green hues on their flanks, often with a dark lateral stripe or series of spots. Fins may have red or yellow edging. Females are generally more subdued in coloration, often brownish or grayish, but can show yellow or orange on their belly when breeding. Coloration can vary depending on mood and origin.

Scale type

ctenoid

Mouth position

terminal

Distinctive features

Slender, torpedo-shaped body, Relatively large eyes, Sexual dimorphism in size and coloration

Dorsal fin

Long, extending almost the entire length of the back, often with a pointed posterior end in males.

Tail fin

Rounded to slightly spatulate.

Pectoral fin

Small and clear.

Distinctive fins

Pelvic fins are often elongated, especially in males, and can be used in display.

Identification Tips

1. 1

   Body Shape

   Look for a distinctly elongated and slender body, more so than many other Nannochromis species.

2. 2

   Coloration (Males)

   Observe for iridescent blue-green flanks and a prominent dark lateral stripe or series of spots. Fin coloration can also be a key indicator.

3. 3

   Sexual Dimorphism

   Males are generally larger and more vibrantly colored, especially during breeding. Females may show a yellow or orange belly when gravid.

Explore Slender Nannochromis