Synchiropus monacanthus
A deep-water dragonet with elongated dorsal filaments and violet fin streaks.
Synchiropus monacanthus, called the deep-water dragonet or South African bigeye dragonet, is a fish in the dragonet family Callionymidae, within the order Syngnathiformes.
Its distribution is known only from scattered records and is poorly documented over much of its range. The species occurs in the western and eastern Indian Ocean and the southeastern Atlantic Ocean, including waters off Tanzania, Zanzibar, Kenya, Madagascar, Mozambique, Port Alfred in South Africa, and the Socotra Archipelago. It inhabits muddy or soft bottoms in deep water, at depths between 175 and 549 meters.
Adults reach 13.0 cm (5.1 in) in length. The body is slender or elongated, with a single prominent preopercular spine. The upper body is greenish and reddish brown to dark brown, while the underside is whitish. The species is noted for its distinct fin shape. The first dorsal fin has elongated filaments. Males have a taller first dorsal fin with different coloration than females. The caudal fin is likely longer in adult males, but more pointed in females. The fins have violet streaks near their outer edges.
Quick Facts
- Taxon
- Synchiropus monacanthus
Facts from the source article.
Lore & Background
The range of Synchiropus monacanthus is known from scattered records and is poorly documented throughout much of its range. This species is distributed in both the western and eastern Indian Ocean and the south-eastern Atlantic Ocean, including Tanzania, Zanzibar, Kenya, Madagascar, Mozambique, Port Alfred in South Africa, and the Socotra Archipelago. They can be found on muddy or soft bottoms in deep-water habitats at depths of 175 to 549 meters.
This species reaches a length of 13.0 cm (5.1 in). Their bodies are slender or elongated with a single yet prominent preopercular spine. They have a greenish and reddish brown to dark brown upper body with it being whitish from below. The species is known for its distinct fin morphology, including elongated filaments on the first dorsal fin. Males have a higher first dorsal fin with different coloration than females. The caudal fin in adult males is likely longer but more pointed in females. The fins have violet streaks distally.
Reader's Guide
Synchiropus monacanthus is significant as a member of the dragonet family Callionymidae, inhabiting deep-water habitats on muddy or soft bottoms. Its distribution is poorly documented, with scattered records across the western and eastern Indian Ocean and the south-eastern Atlantic Ocean, including locations such as Tanzania, Zanzibar, Kenya, Madagascar, Mozambique, Port Alfred in South Africa, and the Socotra Archipelago. The species reaches a length of 13.0 cm and is characterized by a slender body, a prominent preopercular spine, and distinct fin morphology, including elongated filaments on the first dorsal fin and violet streaks on the fins distally. Sexual dimorphism is noted: males have a higher first dorsal fin with different coloration, and the caudal fin is likely longer in adult males but more pointed in females. Its legacy lies in its unique appearance and the limited knowledge of its range, highlighting the need for further study of deep-water dragonets.
Did You Know?
- Synchiropus monacanthus is also known as the deep-water dragonet or the South African bigeye dragonet.
- This species is found at depths of 175 to 549 meters on muddy or soft bottoms.
- The fins of this species have violet streaks distally.
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