What Are Brackish Fish?
Brackish fish inhabit waters that are saltier than freshwater but less saline than the open sea, with specific gravity typically ranging from 1.005 to 1.015. This unique environment mimics estuaries, mangrove swamps, and river mouths where fresh and saltwater mix.

Top Species We Offer:

• Figure-8 Pufferfish (Tetraodon biocellatus): Small (up to 3″), playful puffers that enjoy floating plants and hiding spots.

• Mono-mouths (Monodactylus spp.): Silver, laterally compressed fish that school tightly—ideal for larger tanks (60 L+).

• Archerfish (Toxotes spp.): Fascinating “shooters” that spit water to knock down insects; require a tall tank with over-tank cover for feeding.

• Scats (Scatophagus argus): Hardy, omnivorous fish reaching up to 12″—great for community brackish setups.

Tank Setup & Water Parameters:

• Tank Size: Minimum 60 L for small species; 150 L+ for schooling or larger species.

• Salinity: Maintain SG 1.005–1.015; use a refractometer for accurate readings.

• pH & Hardness: Aim for pH 7.5–8.0 with moderate hardness (8–15 dGH).

• Filtration & Flow: Gentle to moderate current; hang-on or canister filters with mechanical and biological media.

• Décor: Driftwood, mangrove roots, and sturdy plants like Java fern—plus plenty of rockwork and caves for territorial species.

Feeding & Diet:

• Figure-8 Puffers: Live/frozen bloodworms, brine shrimp; occasional algae wafers.

• Mono-mouths & Scats: Omnivorous—offer flake, pellet, plus veggie matter (blanched spinach, zucchini).

• Archerfish: Crickets, flies, small shrimp; train them with floating insects above the water.

Health & Maintenance:

• Water Changes: 20–30% weekly—monitor salinity and top off with fresh/brackish mix to compensate for evaporation.

• Disease Prevention: Quarantine new arrivals for 2 weeks; watch for ich or bacterial infections.

• Observation: Look for color fading, labored breathing, or clamped fins as early warning signs.

Why Buy Brackish Fish from Aquatropics?

• Expert Guidance: Andy and the team tailor advice to your setup.

• Quality Guarantee: All stock is health-checked and acclimated in our London facility.

• One-Stop Shop: From marine salt mix to specialized foods and equipment, we’ve got you covered.