As it does not require much maintenance of pampering, it can be safely bought by the beginners. In the nature, it can be found in many ponds, streams and polls which are located below the waterfalls. Generally it is comfortable in shallow waters.
It is fond of jumping to catch its food. It can easily catch insects which are flying just over the surface of the water. In fact it can travel on land for a small distance especially in the mud to catch insects. It can remain out of water for a long period of time and it can even remain motionless for some time. So it is always a good idea to close your aquarium with a tight lid, otherwise the fish may find its way on your carpet and on your furniture!
It is not an annual killifish meaning its life cycle is not limited to a particular part of the year. About 100 species of Rivulus Killifish can be found in various places of South America and in some parts of North America.
Its body can grow from 1 inch to 4 inches in a very short time. The male is more colorful than the female. It is found in light blue color with red dots and sometimes you can find yellow stripes on its fins. The female is usually found in brown color. However, there is usually no difference in the size of male and female.
It does not require much maintenance. It can survive within a wide range of temperature from 60 to 85° F. It is comfortable in the slightly acidic water with a ph value of around 7.0 and it can tolerate some variations in the condition of water also.
Rivulus Killifish is famous for eating guppy fish. In fact it is called a guppy predator and studies have shown that it can eat guppies very fast. So if you'll keep it in the aquarium, you will need to exclude the guppy fish specifically.
Breeding Rivulus Killifish is not very difficult. To begin with, you should start feeding it with a diet of high nutritional values. It is better to combine live food with the flaked food. Brine shrimp and blood-worms can be a treat for the fish. As its size is large, you should feed both the male and female in large quantities. If you feed them with a variety of live food, you can get large spawns.
During the breeding season, the female will continuously lay eggs. Usually, the females will prefer to lay eggs in the daytime. Rivulus Killifish is not fond of eating eggs so you can keep the adults in the same tank after spawning.
The eggs will hatch within two weeks. The small fry will require food from the very first day and they will grow very fast. Within about four weeks they will start eating like adults.
If you are a beginner, you can certainly start with Rivulus Killifish. If you can manage a bigger aquarium, you can keep the water levels a bit low over and close the aquarium with a tight lid. Then you can enjoy looking at them swimming happily all over the aquarium and jumping frequently. After some time, you can even enjoy feeding them by tossing the food and looking at their elegance while they catch it in the air!
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