Sling Jaw Wrasse - Epibulus insidiator

Sling Jaw Wrasse (Epibulus insidiator)

The Sling Jaw Wrasse is a highly distinctive marine wrasse best known for its extraordinary extendable jaws, which can shoot forward rapidly to capture prey. Large, active and predatory, it is an impressive species for spacious marine aquariums with robust tankmates and substantial swimming room. Its feeding behaviour and eventual adult size make it best suited to experienced marine aquarists.

Common Name:
Sling Jaw Wrasse, Slingjaw Wrasse

Scientific Name (Latin):
Epibulus insidiator

Maximum Size:
Approximately 45–50 cm

Water Type:
Marine

Origin / Natural Habitat:
The Sling Jaw Wrasse occurs across tropical Indo-Pacific reef environments and is associated with coral reefs, lagoons, reef slopes and areas containing substantial rocky structure.

It spends much of its time cruising around the reef in search of fish, crustaceans and other suitable prey.

Water Parameters:
Temperature: 24–26°C
pH Range: 8.1–8.4
Salinity: SG 1.024–1.026
Nitrate: Low and stable
Ammonia/Nitrite: 0 ppm

Temperament:
Semi-Aggressive / Predatory

The Sling Jaw Wrasse is a powerful predatory fish and may consume smaller fish and ornamental crustaceans.

It is best housed with large, robust marine fish that are too large to be regarded as prey.

Diet:
Carnivore / Predator

The Sling Jaw Wrasse naturally feeds on fish, shrimp, crabs and other reef-associated animals.

In the aquarium, offer a varied diet including chopped prawn, shrimp, squid, mussel, krill and suitably sized pieces of marine fish.

Quality carnivore pellets may also be accepted once the fish is well established.

Minimum Tank Size:
Approximately 1,000 litres

A very large aquarium with substantial horizontal swimming space is required due to its adult size and highly active nature.

Behaviour & Activity:
The Sling Jaw Wrasse is an active daytime swimmer that spends much of its time cruising through open water and around rockwork in search of food.

Its most distinctive adaptation is its highly protrusible mouth, which can extend rapidly forward to capture prey from a surprising distance.

Provide extensive open swimming space alongside secure rockwork, caves and sheltered areas.

Reef Safe:
Not Reef Safe

The Sling Jaw Wrasse should not be considered reef safe with ornamental invertebrates.

Shrimp, crabs and other mobile invertebrates may be hunted and consumed, and smaller fish may also be at risk.

Although healthy coral tissue is not normally its main target, its predatory behaviour makes it unsuitable for most conventional reef aquariums.

Special Requirements or Care Notes:
This species should only be purchased with its substantial adult size and long-term requirements fully considered.

Provide a very large, mature marine aquarium with excellent filtration, strong oxygenation and extensive swimming space.

Tankmates should be chosen according to mouth size rather than body length alone, as surprisingly large prey may be swallowed.

Avoid small fish, ornamental crustaceans and timid tankmates.

Rockwork should be positioned securely to withstand the movement of a large, powerful wrasse.

A tightly fitted aquarium lid is strongly recommended, as large wrasses can jump when startled.

Regular varied feeding and consistently high water quality are essential for long-term success.

Suitable for:
Experienced

Availability:
Availability can vary depending on season, collection area and supplier.

All images are a visual representation of the fish you will receive, made to be as accurate as possible. Please note that Mother Nature is a wonderful thing, and variation in patterns and colours will occur — that is part of the unique beauty of these animals