Flowerhorns

Flowerhorns(FH) are one of the easiest aquarium fish to keep. They come under Cichlids. They are hybrid fish, due to which many hardcore aquarists are against it. FHs are categorized into many sub divisions. They are extremely aggressive and hence best kept alone. FHs are very popular all over the world as Feng-Shui fish. Male FHs have a protruding nauchal-hump called KOK. Generally the bigger the hump the more is its price.
Tank specifications & care:
Tank size: the bigger the better.
Tank mates: best kept alone, although have been successfully kept with arowanas, parrots and a few other species.
Diet: A combination of various FH pellets, live guppies, shrimps and fresh market prawns works best.
Breeding: Best avoided, unless one has acquired a very good strain pair. Not all FHs take kindly to each other(regardless of sex). Males should be at least twice the size of the female to avoid being killed, as the female becomes very aggressive during mating.
Sexing: Difficult among juveniles. Males usually have a large KOK which is usually smaller or absent in females. The most accurate way is to check the vent, males have a 'V' shaped vent whereas females have a 'U' shaped vent. Also a spot on the dorsal fin is usually a sign of it being a female(not always the case though!).
Maintainance: Weekly water changes of 30% is recommended with addition of a little non-iodized rock salt. Coral-chip gravel can be used to maintain a higher Ph.
Misc: It is recommended to cover the tank on 3 sides(back, right & left) with colorful backgrounds, as this helps in improving the color of th FH. Lights should be used for about 6-7 hours everyday. Good filtration would ensure better health of your FH.

Some of my FHs:

Female FH at 6"


Using a glass divider to keep two FHs in the same tank


A juvenile FH displaying brilliant colouration at 1.5"


Male FH(Li'l Tazz) at 3.5" already showing signs of a good KOK


Li'l Tazz at 6"