Marble Archer Fish Small

Overview

The Marble Archer Fish (Toxotes blythii) is a fascinating brackish species that shoots jets of water to knock insects off overhanging vegetation. They require brackish to full marine conditions as adults — NOT a freshwater species.

Water Parameters

• Temperature: 24–28°C (75–82°F)
• pH: 7.5–8.5
• Hardness: 15–25 dGH (brackish to marine)
• Salinity: 1.005–1.015 specific gravity (brackish); increase as they mature

Tank Setup

• Minimum tank size: 300 litres for one (they grow to 15–20 cm)
• Substrate: Sand or crushed coral
• Decor: Driftwood, rocks; open swimming space; they jump — tight-fitting lid essential
• Note: They are surface dwellers and jumpers

Diet

• Base: High-quality pellets, flake
• Treats: Live insects (crickets, mealworms), frozen bloodworms, prawns
• Note: They shoot water to catch prey — provide overhanging plants for enrichment

Temperament & Tank Mates

• Temperament: Semi-aggressive; predatory
• Best companions: Other brackish species — monos, puffers, scats
• Avoid: Small fish (they will be eaten), freshwater-only species

Common Issues

• NOT a freshwater species — requires brackish conditions as adults
• They jump — secure lid essential
• Grow to 15–20 cm; need a large aquarium
• Fascinating behaviour — one of the most interesting fish in the hobby
• Lifespan: 5–10 years