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Brackish fish

Species for estuaries, mangroves, and aquariums with controlled intermediate salinity.

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Tank position and role

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Categories
53SurfaceSpecies that use the upper tank and water surface.42MidwaterVisible mid-column fish for movement and color.38BottomSubstrate, cave, and lower-tank inhabitants.40SchoolSpecies kept in higher numbers for natural movement.18GroupSpecies managed in small compatible groups.1Pair / trio / haremFish with tighter social pairing or group ratios.13Solo / centerpieceSpecies used as a main presence or single focus.9Nano tankSmall fish for compact tanks and lighter stocking.