I'm new to this forum and would appreciate some advice please.
I live in Thailand and have 3 fish ponds in my garden: 20,000 ltr Carp pond; 3,000 ltr pond; 750 ltr goldfish pond.
The 3,000 ltr pond has 12 yellow cichlids and a load of guppies.
It's quite well planted, has 3 rocky areas with pebble bottom at one end and sand bottom at other end.
The yellow cichlids I have had for 2 years.
I want to add other fish to the pond - preferably red or gold - to give a contrast to the yellow cichlids.
I thought about adding red swordtails but I'm not sure if they'll be compatible.
Advice gratefully accepted.