How to Identify Silver Tetra

To identify Silver Tetra (Moenkhausia oligolepis), look at these key features.

Physical Characteristics

Body shape

compressed

Coloration

Overall silvery body with iridescent scales, often exhibiting a golden or greenish tint depending on lighting and mood. A prominent, often vertically elongated, dark spot is present on the caudal peduncle, extending onto the base of the caudal fin. Fins are typically hyaline (clear) to slightly yellowish, sometimes with a reddish tinge, especially in males during breeding.

Scale type

cycloid

Mouth position

terminal

Distinctive features

Large, prominent scales (hence 'oligolepis' meaning 'few scales', referring to their relatively large size compared to other tetras)., Distinctive dark spot on the caudal peduncle., Adipose fin present.

Dorsal fin

Single, relatively tall dorsal fin, typically with 10-11 rays.

Tail fin

Forked caudal fin, often with a dark spot at its base.

Pectoral fin

Paired pectoral fins, clear.

Distinctive fins

Adipose fin present between the dorsal and caudal fins.

Identification Tips

1. 1

   Body Coloration

   Look for the shimmering silver body, often with a golden or greenish iridescence.

2. 2

   Caudal Peduncle Spot

   The most reliable identifier is the distinct, often vertically elongated, dark spot on the caudal peduncle, extending onto the base of the caudal fin.

3. 3

   Scale Size

   Observe the relatively large and prominent scales compared to many other tetra species.

4. 4

   Adipose Fin

   Presence of a small, fleshy adipose fin between the dorsal and caudal fins.

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