Equetus lanceolatus, commonly known as the Jack Dempsey or Jackknife Fish, is a visually captivating grunt species prized for its bold black and white striped pattern and distinctive elongated dorsal fin. This listing features tank-bred specimens in small to medium sizes, making them a sustainable and hardy choice for marine aquaria.
Care Level: Moderate care is recommended. Equetus lanceolatus requires stable water parameters and a well-established tank.
Temperament and Compatibility: Generally peaceful but can be territorial towards conspecifics or similar-shaped fish. Best kept singly or as a mated pair in tanks with other semi-aggressive or peaceful species. Avoid housing with very small or timid fish to prevent stress.
Diet: Carnivorous. Feed a varied diet including high-quality frozen or live meaty foods such as brine shrimp, mysis shrimp, and finely chopped seafood. Supplement with pellet or flake foods formulated for marine carnivores.
Minimum Tank Size: A minimum of 150 litres (approximately 40 gallons) is recommended to provide ample swimming space and territory.
Lighting and Water Flow: Standard marine aquarium lighting is sufficient. Moderate water flow is preferred to mimic natural reef edge environments.
Placement: Provide plenty of rockwork and hiding places to allow natural behaviour and reduce stress. Equetus lanceolatus appreciates caves and crevices.
Origin: Not Provided (tank-bred specimens).
Maximum Size: Typically grows up to 15 cm (6 inches) in captivity.
Reef Safety: With Caution. May nip at small invertebrates or coral polyps; not recommended for delicate reef tanks.
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