Trumpetfish Guide: How to Catch, ID & What They Eat

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Ever seen a long, skinny fish hovering vertically near a reef, looking like a piece of swaying seaweed or a stick? You might have spotted a trumpetfish! These masters of disguise are fascinating creatures, and while they aren’t a primary target for most anglers, they can be caught (and are sometimes even eaten). This comprehensive guide covers everything you need to know about trumpetfish: identification, habitat, behavior, how to catch them, their diet, reproduction, and how to tell them apart from their close relatives, the cornetfish. We’ll delve into the unique biology of these fish, exploring their incredible adaptations.

TL;DR: Trumpetfish (Aulostomus maculatus) are ambush predators found on coral reefs throughout the tropical Atlantic, Pacific, and Indian Oceans. They are identified by their elongated tube-like body, which they use to shadow larger fish and approach prey undetected. Trumpetfish are not commonly targeted for sport but are occasionally caught incidentally while reef fishing.
A Chinese Trumpetfish swimming near coral
A Yellow Form Trumpetfish (Aulostomus chinensis). Source: zsispeo

What is a trumpetfish? unmasking the master of disguise?

Trumpetfish belong to the family Aulostomidae. There are only three recognized species in the Aulostomus genus, all sharing similar characteristics but found in different parts of the world:

  • Atlantic Trumpetfish (Aulostomus maculatus): Found in the Western Atlantic, from Florida and the Caribbean to Brazil. Often a mottled reddish-brown, but can change color.
  • Chinese Trumpetfish (Aulostomus chinensis): Found in the Indo-Pacific (from East Africa to Hawaii and French Polynesia). Can be bright yellow, brown, or green.
  • Pacific Trumpetfish/Painted Flutemouth (Aulostomus strigosus): Found in the Eastern Pacific and Easter Atlantic Oceans.

They are not closely related to cornetfish (family Fistulariidae), although they share a similar body shape. They are also not closely related to seahorses or pipefish, though they share some characteristics with the order they belong to.


What is key identifying features of trumpetfish?

Elongated Body: Long, thin, and rigid, somewhat like a trumpet or a flute (hence the name). Their body shape is almost pike-like. The name itself comes from this shape. ‘Aulos’ is Greek for flute.

Tube-Like Snout: A long, tubular snout with a small mouth at the end.

Expandable Jaws: They can expand their jaws rapidly to four times their resting size, creating powerful suction that pulls prey into their mouth. This expansion is made possible by elastic tissues in the jaw.

Dorsal and Anal Fins: Located far back on the body, near the tail. The dorsal fin is divided into two parts:

  • Spinous Dorsal Fin: A series of 8-12 isolated spines along the back, before the main soft dorsal fin. These spines can be raised or lowered.
  • Soft Dorsal Fin: Located directly above the anal fin.

Anal Fins: Sits below the soft dorsal.

Coloration: Can vary greatly, even within the same species. They can be brown, reddish-brown, green, bright bright yellow, or even blue-gray. They can change color to camouflage themselves with their surroundings, blending in with corals, sponges, sea fans, or sea whips. They often have brown spots or a black bar.

Size: Can grow up to 31 inches (80 cm) long, but most are smaller. The maximum length can approach a meter in some cases.

Chin Barbel: A small barbel (a fleshy, whisker-like projection) located on the chin, near the tip of the lower jaw. This is a sensory organ.

Scales: Small, embedded scales.

Caudal Fin: Rounded

Teeth: They have tiny teeth.


What is trumpetfish vs. cornetfish: how to tell the difference?

Trumpetfish and cornetfish are often confused because they both have long, thin bodies. Here’s the key difference:

Tail Fin:

  • Trumpetfish: Rounded, fan-shaped caudal fin.
  • Cornetfish: Forked tail fin with a long, filament-like extension in the middle.
a Trumpet Fish swimming
A beautiful Atlantic Trumpetfish (Aulostomus maculatus). Source: Kevin Bryant

What is habitat and distribution?

Trumpetfish are found in tropical waters around the world:

  • Aulostomus maculatus (Atlantic Trumpetfish): Western Atlantic (South Florida, Bermuda, the Caribbean, to Brazil, and the Gulf of Mexico.), and Eastern Atlantic.
  • Aulostomus chinensis (Chinese Trumpetfish): Indo-Pacific (from East Africa and the Red Sea to Hawaii, French Polynesia, and Japan).
  • Aulostomus strigosus: Eastern Pacific and Eastern Atlantic Oceans.

They are primarily reef dwellers, found in:

  • Coral Reefs: They often hide among corals, sponges, sea fans, and sea whips.
  • Rocky Substrates: Areas with rocks and crevices provide shelter and camouflage.
  • Seagrass Beds: They may also be found in seagrass beds, blending in with the blades.
  • Depth: They are usually found in relatively shallow waters, from about 7 to 82 feet (2 to 25 meters), though they can occasionally be found deeper.

What is trumpetfish behavior and diet?

Trumpetfish are carnivorous predators with a highly specialized hunting strategy:

Behavior

  1. Camouflage: They are masters of camouflage. They often hover vertically among sea whips, pipe sponges, gorgonians (sea fans), or other vertical structures, blending in with their surroundings. They can also change color to match their background. This makes them almost invisible to unsuspecting prey. They will often align themselves with a longspine squirrelfish to blend in.
  2. Ambush: They slowly approach their prey, often “shadowing” larger, non-threatening fish (like parrotfish or French Grunt) to get closer without being detected. This is known as “riding.”
  3. Strike: They rapidly expand their trumpetfish’s mouth, creating powerful suction that pulls the prey into their mouth. Their jaws can expand to the diameter of their body!

Diet

  • Small Reef Fish: Their primary food source. They prey on a variety of small fish that inhabit coral reefs.
  • Crustaceans: Shrimp, crabs, and other small crustaceans.

Reproduction

Trumpetfish reproduction involves a fascinating courtship ritual or dance.

  • Courtship: The male and female trumpetfish engage in a synchronized swimming display, often changing colors.
  • Spawning: The female releases eggs into the water column, and the male fertilizes them.
  • Specialized Pouch: Some reports discuss a specialized pouch, this is inaccurate.
  • Larvae: The fertilized eggs develop into planktonic larvae, which drift in the ocean currents before settling on a reef.

How do you Catch Trumpetfish?

While not a common target species, trumpetfish can be caught, often incidentally while fishing for other species. Here’s how:

Shore Fishing: They are often found in shallow water near reefs and rocky areas, making them accessible to shore anglers, particularly in places like Hawaii (where they are called “nunu”).

Light Tackle: Use a light spinning rod (7-9 feet) and reel with a light line (10-15 lb test).

Bait: Small pieces of white squid, shrimp, or cut bait can be effective.

Lures: Small jigs or flies that imitate small fish or shrimp can also work.

Technique:

  • Cast near structure (reefs, rocks).
  • Let the bait sink, then retrieve it with a slow, twitching motion, mimicking a small, injured fish.
  • Sometimes, a fast retrieve just below the surface can trigger a strike.
  • Be patient! Trumpetfish can be cautious.

What are trumpet fishfishingtips?

  1. Hawaii: In Hawaii, trumpetfish are common along shorelines and in shallow reef areas. They can be found near the mudflats past Ma’alaea Harbor.
  2. Anywhere: Be observant! Look for their distinctive shape and vertical hovering behavior near structure.

Are Trumpetfish Dangerous?

Trumpetfish are not dangerous to humans. They are not aggressive and have small mouths with tiny teeth. They pose no threat.


Can You Eat Trumpetfish?

Yes, trumpetfish are edible. However, they are not a common food fish, and there are some important considerations:

  • Ciguatera Poisoning: As reef fish, trumpetfish can carry ciguatera toxin, which can cause illness in humans. This risk is higher in larger trumpetfish, especially in areas known for ciguatera (certain parts of the Caribbean, Florida, and the Pacific).
  • Small Size: They don’t have a lot of meat on them.
  • Bony: They have many small bones.

If you do choose to eat trumpetfish, it’s best to eat smaller ones and be aware of the potential risk of ciguatera.


How do you prepare trumpetfish guide?

A chinese trumpetfish swimming
Another beautiful Chinese Trumpetfish (Aulostomus chinensis) Source: Bernard DUPONT

Cleaning

  • Wash the fish in cold water.
  • Cut off the head.
  • Make a cut down the belly and remove the innards.
  • Rinse the cavity.
  • You can fillet the fish (separate the flesh from the bones) or cook it whole (if it’s small enough).

How to Cook Trumpet Fish

  • Fillets: Can be pan-fried, grilled, or baked.
  • Whole Fish: Can be grilled or baked.
  • Sashimi: Some people eat trumpetfish raw as sashimi. However, be aware of the potential risk of ciguatera, and only do so if you are certain of the source and safety of the fish.
YouTube video

 

Taste and Texture

  • The taste is described as unique.
  • You can make fillets.

Conservation Status

Trumpetfish are not currently considered threatened or endangered. They are listed as “Least Concern” by the IUCN (International Union for Conservation of Nature) in many areas. However, like all reef fish, they are vulnerable to habitat loss and overfishing.


Frequently Asked Questions (FAQ):

Why is trumpetfish confused with cornetfish?

Both look similar at first glance (long, thin bodies). The key difference is the tail: trumpetfish have rounded tails, while cornetfish have forked tails with a long filament.

What do trumpetfish eat?

Small reef fish and crustaceans.

What is the coloration of the trumpetfish?

They can be bright yellow, brown, reddish-brown, green, or blue-gray. They can also change color to camouflage themselves.

Where can you find Trumpetfish?

In warm, tropical waters around the world, near coral reefs, rocky substrates, and seagrass beds.

How to catch trumpet fish?

Use light tackle, small baits or lures, and fish near structure.

Are trumpet fish edible?

Yes, but be aware of the potential risk of ciguatera, especially with larger fish.

Do trumpet fish have teeth?

Yes, they have tiny teeth.

What is a fun fact about the trumpet fish?

They are camouflage masters.

Are trumpetfish rare?

Not generally, depends on location.

How big can trumpet fish get?

Up to 31 inches, but most are smaller.

How long do trumpet fish live?

Unknown.

Are trumpet fish harmful?

No.

Where do trumpet fish live?

Near reefs.


Conclusion

Trumpetfish are fascinating and unique creatures, perfectly adapted to their reef environment. While not a primary target for most anglers, they can be caught and are edible (with caution). Understanding their biology, behavior, and how to distinguish them from cornetfish enhances our appreciation for the incredible diversity of life in our oceans. This comprehensive guide provides the knowledge you need to identify, understand, and even (if you choose) catch and consume these intriguing fish. Always remember to fish responsibly and follow local regulations.