Jackknife Fish (Equetus lanceolatus)

Fish in the family Sciaenidae. Moderate care. Reef Safe with Caution.

Jackknife Fish

Quick facts

Scientific nameEquetus lanceolatus
FamilySciaenidae
Care levelModerate
Reef safetyReef Safe with Caution
TemperamentPeaceful
Dietcarnivore
Adult size9 in
Minimum tank size75 gallons
Water parametersTemperature: 72-78°F pH: 8.1-8.3 Salinity: 1.02-1.025
Feeding scheduleFeed 2-3 times daily

Appearance

Elongated body with bold vertical black and white stripes, a steeply angled head profile, and the first three dorsal spines notably elongated, giving a "sail-like" appearance. The fish is named for its characteristic posture with the body arched like a folding jackknife.

Difficulty and care for the Jackknife Fish

Moderate - Requires some experience due to specific dietary water or tank requirements. Best suited for intermediate aquarists.

Origin and habitat

Western Atlantic from Florida and the Bahamas south to Brazil, including the Caribbean.

Log Jackknife Fish in your reef tank

Reef Trak gives you the full record on every species in your tank: acquisition date, source, photos, parameters at time of stocking, and links to maintenance and feeding events. Track Jackknife Fish alongside everything else in your reef.