How to Identify Longhorn Cowfish

To identify Longhorn Cowfish (Lactoria cornuta), look at these key features.

Physical Characteristics

Body shape

rounded

Coloration

Varies from yellowish to olive-brown, often with blue or white spots. Juveniles are typically brighter yellow with black spots. Coloration can change based on mood and environment.

Scale type

none

Mouth position

terminal

Distinctive features

Two prominent, forward-pointing horns above the eyes (supraorbital spines)., Two backward-pointing horns on the posterior ventral surface (postero-ventral spines)., Rigid, box-like body encased in fused bony plates (carapace)., Small, puckered mouth., Small, fan-like fins.

Dorsal fin

Single, small, and fan-like, located posteriorly on the carapace.

Tail fin

Small, rounded, and used primarily for steering.

Pectoral fin

Small, fan-like, and located laterally, used for sculling and maneuvering.

Distinctive fins

All fins are relatively small and used for precise maneuvering rather than rapid propulsion.

Identification Tips

1. 1

   Horns

   The most distinguishing feature is the pair of long, forward-pointing horns above the eyes and the pair of backward-pointing horns on the lower rear body. No other boxfish species has this specific horn configuration.

2. 2

   Body Shape

   Its rigid, box-like body, formed by fused bony plates, is characteristic of the Ostraciidae family. The overall shape is more elongated than some other boxfish species.

3. 3

   Swimming Style

   Observe its unique swimming motion, primarily using its dorsal and anal fins to scull, giving it a 'hovering' appearance.

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