Long-snouted Seahorse

Hippocampus guttulatus

Long-snouted Seahorse (Hippocampus guttulatus) is a seagrass- and macroalgae-associated seahorse of shallow coastal waters in the NE Atlantic and Mediterranean. It is a poor, slow swimmer that anchors to vegetation with its tail and feeds by suction on tiny crustaceans.

Freshwater

Long-snouted Seahorse reference image — Olivier Dugornay (Ifremer), cc-by, via Wikimedia Commons. Source: Wikimedia Commons.

Identification points

Long, slender snout that is noticeably longer than the head.
Distinctive dark spots or pale ringed markings on the body and tail.
Tall, ridged coronet and a relatively elongated, slim body with a prehensile tail.

Habitat

Shallow sheltered coastal habitats with seagrass beds, eelgrass, macroalgae, and mixed sand-mud bottoms; often around estuaries, lagoons, and bays where it can cling to vegetation or debris.

Bait notes

Not a targeted game fish and should not be pursued for harvest. If observed in aquaria or research contexts, it eats live tiny crustaceans such as mysids and copepods; standard sport baits are not applicable.

Behavior

Ambush-feeds on small planktonic and benthic crustaceans using rapid suction from its tubular snout. It is sedentary, cryptic, and commonly found holding fast to seagrass or weed with its prehensile tail; males brood the young.

Caution

Protected or restricted in parts of its range, and seahorses are highly vulnerable to handling stress and habitat damage. Do not dry-handle; they can lose tail grip, suffer air exposure stress, and are unsuitable for consumption.

Fishing notes

Avoid fishing for seahorses; any capture should be unhooked immediately and released in water with minimal handling. In seagrass areas, use weedless, light tackle if fishing nearby to reduce accidental snagging and bycatch.