Fishkeeping is a popular hobby concerned with keeping fish in a home aquarium or garden pond fishes.
Fish have been raised as food in pools and ponds for thousands of years. Brightly colored or tame specimens of fish in these pools have sometimes been valued as pets rather than food. Many other cultures kept fish for both functional and decorative purposes.
Ancient Sumerians kept wild-caught fish in ponds, before preparing them for meals. Depictions of the sacred fish of Oxyrhynchus kept in captivity in rectangular temple pools have been found in ancient Egyptian art.
Aquarium maintenance
Ideal aquarium ecology reproduces the balance found in nature in the closed system of an aquarium. In practice it is virtually impossible to maintain a perfect balance. As an example, a balanced predator-prey relationship is nearly impossible to maintain in even the largest aquaria. Typically, an aquarium keeper must actively maintain balance in the small ecosystems that aquaria provide.
Balance is facilitated by larger volumes of water which dilute the effects of a systemic shock. For example, the death of the only fish in a 10 litres (2.2 imp gal; 2.6 US gal) tank causes dramatic changes in the system, while the death of that same fish in a 400 litres (88 imp gal; 110 US gal) tank that holds many fish creates only a minor imbalance. For this reason, hobbyists often favor larger tanks when possible, as they require less intensive attention.
Types of tank fish
Freshwater Fish for Beginners Bettas
Fancy Goldfish Fancy Guppies
Brackish Fish Gouramis
Freshwater Angelfish Tetra
water Sharks Rainbowfish
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