Diplecogaster bimaculata bimaculata
Diplecogaster bimaculata bimaculata Bonnaterre, 1788, seas of England, although no types were designated.
OTHER COMMON NAMES
English: Two-spotted sucker.
Flattened and elongated body, with a somewhat triangular snout. The dorsal fin has 4–7 soft rays, and the anal fin has 4–7 soft rays. The gill opening is minute. Color varies but usually is red with yellow on the ventral surface and a pattern of blue and brown spots over the body surface. Males are distinguished by a purple or red spot, ringed in yellow, on each flank, behind the pectoral fins. Grows to 2.4 in (6 cm) in length.
Eastern Atlantic Ocean, from Norway and the Faroe Islands south to Gibraltar and the western Mediterranean and Adriatic. The subspecies Diplecogaster bimaculata euxinica is found in the Black Sea and D. bimaculata pectoralis from the offshore Canary and Cape Verde Islands and the Azores.
A temperate species found on sea grass beds, rocky bottoms, bivalve banks, and mud bottoms. Reported to favor shells. Depths range between 59 and 180 ft (18–55 m) in cooler waters and down to 328 ft (100 m) in the warmer Mediterranean.
Not well known. Males likely are territorial.
FEEDING ECOLOGY AND DIET
Feeds on small benthic invertebrates.
Demersal courtship and spawning occur in the spring and summer months, with golden-colored eggs laid in masses under shells or stones. Males provide most of the parental care. Larvae are planktonic.
Not listed by the IUCN.
SIGNIFICANCE TO HUMANS
Occasionally recovered from trawls working soft mud bottoms or bivalve banks.
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