Aulostomus maculatus -  Trumpetfish

Trumpetfish. Photo © Joe Marino

Aulostomus maculatus

These elongated masters of camouflage usualy grow to be 24 to 36 inches long, and float head down among coral, rapidly changing color as needed to blend in. They ambush their prey, and can open their mouths to the diameter of their bodies to suck food in quickly. Like their relatives, the sea horses, the eggs are given to the male to fertilize and care for.

Order - Syngnathiformes
Family - Aulostomidae
Genus - Aulostomus
Species - maculatus

Common Names

English language common names include trumpetfish, Atlantic trumpetfish, Caribbean trumpetfish, fifer, and trumpet fish. Other common names are corneta (Spanish), gefleckter trompetfisch (German), peixe-trombeta (Portuguese), plettet trompetfisk (Danish), trombeta (Portuguese), trompa (Spanish), trompet (Papiamento), trompet del Atlantico (Spanish), trompeta pintada (Spanish), trompetero (Spanish), trompette (French), trompette tachetée (French), trompetvis (Dutch), trumpetfisk (Swedish), tròmpèt (Papiamento), and trõmpet lame (Creole/French).

Importance to Humans

Aulostomus maculatus -  Trumpetfish

Trumpetfish. Photo © Joe Marino

Although not of commercial importance, the trumpetfish is caught incidentally throughout its range in seines and traps. It is marketed locally for human consumption. It is also a popular display fish at public aquariums due to its in interesting body shape and habits.


The trumpetfish has not been evaluated by the World Conservation Union (IUCN). The IUCN is a global union of states, governmental agencies, and non-governmental organizations in a partnership that assesses the conservation status of species.

Geographical Distribution

Aulostomus maculatus -  Trumpetfish, Map

World distribution map for the trumpetfish

The trumpetfish fish resides in the western Atlantic Ocean from off southern Florida and Bermuda, south to the northern coast of South American. In the eastern Atlantic, this species is found off St. Paul's Rocks.


Commonly found in close proximity to coral reefs, trumpetfish often swim vertically with their snouts down helping them blend in with sea fans, pipe sponges and sea whips. They range from 7-82 feet (2- 25 m) in depth.


Distinctive Features
The body of the trumpetfish is very elongate and somewhat compressed with a strongly compressed head. The snout is very long with a trumpet-like mouth. There is a prominent barbell located on the chin at the tip of at the lower jaw. The dorsal and anal fins are set far back on the body with a series of 8-12 dorsal spines preceding the soft dorsal fin. The soft dorsal fin is located opposite of the anal fin. The caudal fin is rounded.

Aulostomus maculatus -  Trumpetfish

Trumpetfish coloration is most commonly a mottled reddish-brown. Photo © Joe Marino

The most common coloration phase of the trumpetfish is mottled brown to reddish brown with irregular black or brown spots. It may also sometimes appear blue-gray, bright yellow or green and can change its color to camouflage with its surroundings with ease. There are silvery streaks along the head and the sides of the body. There is a black bar at the base of the dorsal and anal fins although this bar may occasionally be reduced to a spot. The caudal fin may have one or two spots.

Although there are tiny teeth on the lower jaw, there are no teeth present on the upper jaw

Size, Age, and Growth
The maximum reported length of the trumpetfish is 39.4 inches (100cm) total length (TL). This species is more commonly observed at approximately 23.6 inches (60cm) TL.

Food Habits
Known to use large herbivorous fish as camouflage, the trumpetfish will shadow them until the right moment to strike presents itself. Another strategy is to hang vertically among gorgonians or drifting with the current, ambushing any prey items that swim beneath it through a sucking action. The trumpetfish's mouth has elastic tissues that allow it to open to the diameter of the body, creating a vacuum for sucking up small animals as well as those larger than the trumpetfish's mouth. Documented prey items include the ocean surgeon (Acanthurus bahianus), blue chromis (Chromis cyanea), tomtate (Haemulon aurolineatum), French grunt (Haemulon flavolineatum), longspine squirrelfish (Holocentrus rufus), downy blenny (Labrisomus kalisherae), dusky blenny (Malacoctenus gilli), redlip blenny (Ophioblennius atlanticus), rusty goby (Priolepis hipoliti), spotted goatfish (Pseudupeneus maculatus), reef squirrelfish (Sargocentron coruscum), yellowtip damselfish (Stegastes pictus), and bluehead (Thalassoma bifasciatum).

Trumpetfish courtship includes an elaborate courtship ritual or "dance" along with changes in coloration. Similar to their close relatives, the seahorses, trumpetfish males have much of the burden of reproductive efforts. The eggs are transferred from the female to the male after courtship. The male then fertilizes the eggs and carries them in a pouch until they are born.


Aulostomus maculatus -  Trumpetfish

Trumpetfish reside in close proximity to reefs. Photo © Joe Marino

Reported predators of trumpetfish include the coney (Cephalopholis fulva), yellowfin grouper (Mycteroperca venenosa), red hind (Epinephelus guttatus), dog snapper (Lutjanus jocu), and schoolmaster (Lutjanus apodus).

Scientific studies have documented the copepods Caligus atromaculatus and Caligus biaculeatus as parasites of the trumpetfish.


The trumpetfish was originally described as Aulostomus maculatus by Valenciennes in 1841. There are no known synonyms appearing in past scientific literature referring to this species; however Aulostoma maculatus and Aulostomus maculatum are both considered misspellings of the valid scientific name. There is only a single genus consisting of three species within the family Aulostomidae. The family and genus names are derived from the Greek "auls" meaning flute and "stoma" meaning mouth. This name is in reference to the tubular snouts that members of this family and genus possess. The species name maculatus is derived from the Latin word "macula" meaning spot.

Prepared by: Cathleen Bester