Bettas, also called fighterfish in parts of South East Asia, are intelligent and beautiful fish. They are fun to watch. Their graceful movement and their beautiful finnage make for impressive display.

The scientific name for this fish, Betta Splendens actually means Beautiful Warrior. The betta is a very popular aquarium fish.

Temperament
They are also highly aggressive, particularly the males. This makes bettas mostly unsuited for community aquariums. Bettas have to be kept in a tank all to themselves. Female Bettas are also aggressive.

Female Bettas can be kept in aquariums, with fish of other species.  Make sure that the tank has plenty of space. Provide hiding places where the fish can retire to when stressed. The tanks should have lots of plants, preferably floating plants.  Female Bettas can be provoked with fish with bright finnage such as male guppies

Some aquarium keepers have large number of female bettas in large numbers say 10 or 15. In smaller numbers, they can become hostile to one another and other fish. The females will soon establish a pecking order.

Bettas are anabantids - a family of fish which can breathe air from the surface in addition to breathing through gills. The Betta fish has a special organ called the labyrinth with which it can breathe air. Bettas can survive out of water for long periods provided their skin is kept moist. In nature, Bettas are found in shallow streams and waterways and stagnant water in farms in South East Asia.

Food 
Bettas are surface feeding fish. They eat from the water surface. Bettas can be fed bloodworms, daphnia and brine shrimp. Bettas need food rich in protein and fiber to survive. There are many commercial bettas food available today fortified with nutrients which claim to improve the bettas natural coloring.

Space 
In their natural habitat, the territory of each betta fish may be several hundred square feet. Hence, Bettas should be housed in spacious containers. It is sad that many people keep Bettas in very small containers. While the fish can survive in such small areas, they will be stressed. Ensure that you Betta has adequate space.

Plecos are tropical fish.  They will also grow to about a foot long.  Some individual fish have grow to about 2 feet.  This should be kept in mind before purchasing the fish.

Plecos require a large tank about 55 gallons.  They are pretty hardy fish.  It is easy to care for them.
A pH of 6.5 to 7.5 is ideal.  The temperature can be between 23 and 30 degree Celsius.

Provide plenty of hiding places such as rock overhangs, driftwood and plants for the pleco to rest during the day time.  Plecos are nocturnal fish and they are most active at night.

Plecos are highly territorial.  They require at least 75 gallons per individual.  While they get along well with fish of other species, they become aggressive and hostile with members of their own species.  Hence, it is not advisable to have plecos together.

Having More than one Pleco
Besides, plecos have a high bioload.  They are voracious eaters and produce copious amounts of waste.   The water in the tank can get dirty with many plecos.

If you must have more than one plecos, ensure that the tank is large enough.  Make plenty of hiding places and ensure a thick vegetation.  Also make sure that the Filtration system can handle the waste produced.  It is better to put plecos together when they are young so that they can get used to company of their own kind.

Feeding Plecos
Plecos are bottom feeders.  In the wild, they feed on plant matter and detritus on the bottom of the river or stream.  They also eat other vegetation.

In a tank or pond setting, you can feed plecos algae wafers.  You can also feed them vegetables like cucumbers, zucchini, cabbage and lettuce.  One problem in giving vegetables is to get the vegetables to sink down to the bottom.  Some vegetables like cucumbers will sink down after a few hours.  Other like cabbages and lettuce will need to be held down by a piece of stone or a vegetable clip.

While plecos eat the algae growth in the aquarium, it is not sufficient.  They need to be fed the food mentioned above.  Baby plecos in the first days will have to be fed infusoria or baby brine shrimp.