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Tropical (freshwater) fish make up the vast majority of species found in the hobby today. They are colourful, varied and - for the most part - easy to keep in correct conditions, with most species adapting to life in the aquarium very well.
When you consider the variety of rivers and lakes globally, you begin to realise just what a selection could be on offer. From the Amazon to the Ganges, or Lake Victoria to Lake Erie, there are always new species appearing in trade catalogues and stockists to add a little something to the living or boardroom.
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| The Siamese Fighting Fish (Betta Splendens), 6cm, SE Asia. A peaceful fish - however, males (pic) are aggressive towards each other, so only one is kept per aquarium. |
 | | The Red Bellied Piranha (Serrasalmus Nattereri), 30cm, South America. Famous for its predatory prowess and its teeth, which are extremely sharp and interlock perfectly. |
 | | The Cardinal Tetra (Paracheirodon axelrodi), 4.5cm, South America. Similar in appearance to the Neon Tetra, they look stunning in large shoals. |
 | | The Dwarf Gourami (Colisa lalia), 5cm, mainland South Asia. A brilliantly coloured fish that makes a nest out of bubbles when spawning. |
 | | The Electric Blue Hap (Haplochromis Ahli), 16cm, Lake Malawi, East Africa. It's easy to see how this fish gets its name. Endemic to Lake Malawi, it is an able predator. |
 | | A Killifish (Aphyosemion Sp.), 4-5cm, Tropical Africa. A small colourful addition to any aquarium, the male being the more striking of the species. |
 | | The Cuckoo Synodontis (Synodontis multipunctatus), 12cm, Lake Tanganyika, East Africa. A striking catfish, it is believed to exhibit cuckoo behaviours when breeding. |
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