Gulf pipefish (Syngnathus scovelli)

Classification (WoRMS)

Full classification as recorded by WoRMS: Kingdom: Animalia · Phylum: Chordata · Class: Teleostei · Order: Syngnathiformes · Family: Syngnathidae · Genus: Syngnathus.

Accepted name: Syngnathus scovelli · Authority: (Evermann & Kendall, 1896) · Taxonomic status: accepted · AphiaID: 275232.

Synonyms and superseded combinations recorded for this taxon: Siphostoma scovelli Evermann & Kendall, 1896.

Source: World Register of Marine Species (WoRMS) — https://www.marinespecies.org/aphia.php?p=taxdetails&id=275232 (CC BY 4.0). Accessed 2026-09-25.

Biology and life history (FishBase)

Measured values published by FishBase for Syngnathus scovelli. Only fields the database actually holds for this species are shown; these are database values, not aquarium guidance.

Maximum length: 18.299999237060547 cm · Common length: 7.5 cm · Depth range: 0–6 m · Habitat zone: demersal · Body shape: eel-like · Vulnerability index: 12.3 of 100.

FishBase notes: Common in bays and estuaries. Usually found amongst vegetation (Ref. 26938). Enters fresh water. Ovoviviparous (Ref. 205). The male carries the eggs in a brood pouch which is found under the tail (Ref. 205).

Source: FishBase species summary (SpecCode 3306) — https://www.fishbase.se/summary/Syngnathus-scovelli.html (CC BY-NC 3.0 — non-commercial use only). Accessed 2026-09-25.

Distribution and occurrence records (GBIF)

46,297 georeferenced occurrence records for Syngnathus scovelli are published through GBIF from 10 countries or marine areas. The map above plots 28 distinct locations from a sample of 3,000 records, omitting 44 inland records that carry an institution's coordinates rather than a collection site; it shows where the species has been observed and reported, not a modelled range.

Most records by country or area: United States of America (45,461); Puerto Rico (443); Mexico (356); Brazil (13); Venezuela (Bolivarian Republic of) (12).

The full country table, WoRMS marine regions and the sampling notes are on this species' Distribution page.

Source: GBIF Occurrence Search (taxonKey 2332964) — https://www.gbif.org/occurrence/search?taxon_key=2332964&has_coordinate=true (records CC0 / CC BY); WoRMS distribution records (MarineRegions) — https://www.marinespecies.org/aphia.php?p=taxdetails&id=275232 (CC BY 4.0); Natural Earth 110m basemap — https://www.naturalearthdata.com/ (public domain). Accessed 2026-09-25.

Conservation status (IUCN Red List)

The IUCN Red List assesses Syngnathus scovelli (Evermann & Kendall, 1896) as Least Concern (code LC). No trend, population estimate or threat analysis is given here, because none is available from this source without the Red List API; follow the source link for the full assessment, including its date.

Source: IUCN Red List of Threatened Species (taxon 202406) — https://www.iucnredlist.org/species/202406/0; GBIF IUCN Red List category endpoint (taxonKey 2332964) — https://api.gbif.org/v1/species/2332964/iucnRedListCategory. Accessed 2026-09-25.

Description and natural history (Wikipedia)

S. scovelli is an elongated fish encased in body rings. They are uniformly brown or dark olive green in color, with silvery, white vertical bars along the sides, sometimes appearing Y-shaped. Their maximum size is 183 mm SL, although most gulf pipefish rarely exceed 100 mm SL. They have a short snout, its length going into its HL 1.9-2.3 times.

This species has 18-19 trunk rings and 30-34 tail rings. The dorsal fin is moderate in length and spans 2-4 trunk rings and 3-5 tail rings. In females, the dorsal fin is usually banded.

The caudal fin is present and rounded. The anal fin is greatly reduced, and the pelvic fins are absent. Females have a well-developed keel on their abdomen that is reduced in both juveniles and males. Mature males have a brood pouch on their underside that spans 10-13 tail rings.

Diet

Gulf pipefish feed during the day time with their diet mainly consists of crustaceans such as copepods, amphipods, tanaids, and isopods, among other small crustaceans. Individuals less than 50 mm SL feed almost exclusively on copepods. Larger individuals feed more on amphipods, crustacean eggs, and caridean shrimp.

Habitat

The gulf pipefish is a marine-estuarine species. It commonly inhabits shallow, highly vegetated shoreline areas with clear, tannin-stained streams and rivers. They also commonly inhabit estuarine seagrass meadows. However, their species population have been declining due to the impact of growing human (Homo sapiens) population size.

This cause negative effects such as nutrient loading, pollution, harmful algae blooms and habitat degeneration. There has been large substantial declines in the waters of the Atlantic Ocean coast and the coast of Florida, United states. The loss of much of the seagrass Meadows in the Indian River Lagoon along with the harmful ongoing algae blooms is causing a decline in the gulf pipefish species.

Reproduction

Not much is known concerning age and growth of this species; they may mature within six months and typically live less than one year. There is also limited knowledge on larval development.

The gulf pipefish breeds in fresh, brackish, or highly saline water. Spawning can occur throughout the year, except on the northern Gulf Coast where there is a winter decline in reproductive activity. The male develops a brood pouch at maturity that remains for life.

They have an elaborate courtship ritual that is initiated by the female. The ritual consists of the two swimming together and bobbing to the surface of the water, before intertwining their bodies. After mating, the male rubs his brood pouch along the bottom. This is thought to help move the eggs from the front of his pouch to the rear.

When eggs are mature, they are bright orange in color, oval to pear-shaped, and on average 1.3 mm in diameter. The eggs stay in the ovarian lumen until being transported to the brood chamber for fertilization. After 14–15 days at 24.5 degrees Celsius, the eggs will hatch. Males are known to collect eggs from several different females.

Distribution

This species ranges from the Atlantic coastal regions of northern Georgia (US state), southward along the Florida coast into the Gulf of Mexico, and south to São Paulo, Brazil. Populations of gulf pipefish have been reported in freshwaters of Louisiana at Lake St. John about 150 miles inland and in Texas at Lake Texana about 50 miles inland.

Sygnathus: jaw together; scovelli: named in honor of Josiah T.

Source: Wikipedia: Gulf pipefish — https://en.wikipedia.org/wiki/Gulf_pipefish (CC BY-SA 4.0). Accessed 2026-09-25.