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acid aeration Agmus already Ammannia amongst Apistogramma Aponogeton Aquadocumenta aquarist aquarium fishes aquarium plants aquatic Aulonocara Banjo Catfishes barbel behaviour Bielefeld 11 biotope Bleher bogplants boiled borellii Bottom breeding brood Bunocephalus carbon dioxide caught cessful Characidae characins chromis colour Crenicara Cynolebias described dry food duboisi Dupla Duplalux DuplaRin dwarf cichlid easily eaten eggs Enzyme fauna female fertilizers filter floating genus grow growth habitat Helogenes Horn fern humidity important iron iron fertilizer Kaspar Horst keeping known Labyrinth Fishes lacustris Lake Lake Tanganyika leaves light maculata male Melanotaenia mg/l minerals and trace morphs Nanochromis native nutrient observations oxygen oxygen content paludarium Paraguay pet fishes pH value PHOTO Pistia rainbow fishes re-imported roots season South American Spanish Dancer spawning specimens substrate temperature Today's Aquarium trace elements Tropheus species tropical vegetable vitamins water plants Wolffia arrhiza yellow young