Most people keep discus in 400 litres and more so that they can grow big. As a baby, discus will secrete a hormone that stops them from growing. If your tank is too small, the hormone will build up and you will end up with stunted fish. Also, a bigger tank is easier to keep stable.
Definition of lipâsmacking. 1  1 : causing the lips to smack in eager anticipation or in delight lip-smacking recipes lip-smacking desserts. 2  2 : excitingly sensational or provocative fervid, lip-smacking stuff â Alexandra Jacobs. 3  3 : markedly gratifying boasted with lip-smacking satisfaction â Sports Illustrated.
(third-person singular simple present lips, present participle lipping, simple past and past participle lipped) To touch with the lips; to kiss or lick; to lap the lips against something. To utter verbally. To simulate speech merely by lip-movement, as suffices for a lip-reader. (sports) to make a golf ball hit the lip of the cup, without dropping in.