Zo herken je Bolen

Om Bolen (Aspius aspius) te herkennen, let op deze belangrijke kenmerken.

Fysieke kenmerken

Lichaamsvorm

torpedo

Kleur

Dorsal side is typically dark grey to greenish-brown, fading to silvery flanks and a white belly. Fins are often greyish, sometimes with a reddish tint, especially the caudal and anal fins in mature individuals.

Schubtype

cycloid

Positie van de bek

superior

Onderscheidende kenmerken

Large, upward-pointing mouth with a prominent lower jaw (prognathous), Absence of barbels, Strongly forked caudal fin, Relatively small, embedded scales, Streamlined, muscular body for fast swimming

Rugvin

Short, high, and located relatively far back on the body, with 3 unbranched and 8-9 branched rays.

Staartvin

Deeply forked, powerful, and symmetrical, indicative of a fast-swimming pelagic predator.

Borstvin

Relatively long and pointed, positioned low on the body, with 1 unbranched and 16-18 branched rays.

Kenmerkende vinnen

Anal fin is relatively long with 3 unbranched and 12-15 branched rays. Pelvic fins are abdominal.

Identificatietips

1. 1

   Mouth

   The most striking feature is its large, upturned mouth with a prominent lower jaw, clearly adapted for surface feeding on prey.

2. 2

   Body Shape

   Its sleek, elongated, and muscular body, combined with a deeply forked tail, distinguishes it as a fast-swimming predator.

3. 3

   Absence of Barbels

   Unlike many other cyprinids (e.g., barbel, carp), the Asp lacks any barbels around its mouth.

4. 4

   Scales

   The scales are relatively small and embedded, giving the fish a smooth appearance.

Ontdek Bolen