Oscar require temperature from 74-80 deg F for healthy living. And oscars are messy So you will need a good filtration system in your pond. If you live in the tropics and the water will never go below 75F they should survive.

During the night the temperature goes down so you have to place a heater in the pond.

Oscar fish Yes they live even You will probably never see them though once they are in a pond because their colouring will make them almost Instead some aquarium fish can live outside in certain environments to benefit backyard ponds and fountains. Having active colorful fish in fountains and ponds isn t just a fun spectacle. It can solve several problems with outdoor bodies of water. Hello can anybody tell me if i can keep oscars in a pond. I live in south africa. If i could keep them in a pond what should i set up in the pond to keep the oscars healthy and happy. I have already got a filter with it wahtelse would i need. I know the basics of keeping fish.

Putting the chemicals so that the fish can live in the water and the heating etc. But how would i heat a pond to Once summer temperatures are stable enough it is possible to keep tropical livebearer fish in garden pond environments. I have even heard reports that these fish will spawn more actively in garden ponds than in the aquarium. Where i live in maryland summer temperatures swing quite a bit from day to night. Depending on where you live there s a pretty large variety of fish that can be kept in outdoor ponds. You ll have to be aware of course of their hardiness and whether or not they will be able to overwinter based on the climate that you live in. Instead of filling an outside pond with fish that are bound to grow considerably it s advisable to fill it with small fish that form colorful shoals. The red shiner cyprinella lutrensis is a species that comes from the united states. Owing to its small size 9 cm - 3.5 inches outdoor ponds can be populated with small and colorful shoals.

A small pond can have large temp fluctuations especially if it has a large surface to depth ratio. Think of cooling at the surface vs. Drag yourself out of bed around six in the morning and take the temp of the pond. I ve only done koi ponds outside so far but planning a new above-ground pond for my tropical predator fish mostly arowana s . For koi obviously no heater. Average pond temps during the spring summer seem to be around 78-82 perfect for most predator fish . During the winter fall however a heater is an absolute.