Come identificare Flying Gurnard

Per identificare Flying Gurnard (Dactylopterus volitans), osserva queste caratteristiche chiave.

Caratteristiche fisiche

Forma del corpo

elongated

Colorazione

Variable, typically mottled brown, green, or grey on the dorsal side, with lighter ventral surfaces. The large pectoral fins are often brightly colored with iridescent blues, greens, and yellows, and may have dark spots or ocelli, especially on the inner surface. This coloration is primarily for display and startling predators.

Tipo di squame

none

Posizione della bocca

terminal

Caratteristiche distintive

Enlarged, wing-like pectoral fins that can be spread wide, Large, bony head with a steep profile and prominent eyes, Two separate dorsal fins, the first with short, strong spines, Body covered in bony scutes rather than typical scales, Pelvic fins located far forward, almost under the throat

Pinna dorsale

Two dorsal fins: the first with 2 free spines followed by 4-5 short, strong spines; the second with 8 soft rays. The first two spines are often detached and used as feelers.

Pinna caudale

Caudal fin is slightly emarginate or truncate.

Pinna pettorale

Extremely large and fan-like, divided into two sections: a smaller anterior part and a much larger posterior part that extends well beyond the caudal fin when fully spread. These fins are supported by numerous rays (typically 28-30).

Pinne distintive

The first two dorsal spines are separate from the rest of the dorsal fin and can be moved independently. The pelvic fins are thoracic, positioned anterior to the pectoral fins, and have 1 spine and 4 soft rays.

Consigli per l'identificazione

1. 1

   Pectoral Fins

   The most striking feature is the enormous, fan-like pectoral fins. When spread, they resemble wings and are often brightly colored. These are much larger and more elaborate than those of true gurnards (family Triglidae).

2. 2

   Head Shape

   Possesses a large, bony, and somewhat flattened head with a steep profile. The eyes are prominent and located high on the head.

3. 3

   Body Covering

   Unlike most fish with scales, Dactylopterus volitans has a body covered in heavy, bony scutes, giving it a somewhat armored appearance.

4. 4

   Behavior

   Observe its movement: it 'walks' on the seabed using its pelvic fins and the lower rays of its pectoral fins, occasionally spreading its large pectoral fins when disturbed or for display.

Esplora Flying Gurnard