Seeing fish swimming is a sign of peace and happiness.
Dream dictionary: Fish dream meanings
Seeing an aquarium with fish swimming peacefully in clear water is a sign of peaceful and lasting happiness.
(Fish) In a dream, a seafood restaurant represents adversi- ties, fights, evil, stress, depression, or relief from difficulties. (Also see Fishery)
…excreting in a dream, it means spending money with a clear intent of benefiting from it. Seeing the anus of an unknown woman in a dream means material losses, or it could mean difficulties in ac- quiring the necessary money for one’s livelihood. Seeing worms coming from one’s anus means departing from one’s children or loss of one’s children. If a cloth comes out of one’s anus in a dream, it means severing relations with strangers who took advantage of one’s children and abused their rights. Having sexual intercourse with a woman through the anus in a dream means asking for something in the wrong way. If one sees a peacock coming out of his anus in a dream, it means that he will beget a beautiful daughter. If he sees a fish coming out of his anus in a dream, it means that his wife will beget an ugly…
If one child was born joy and prosperity. If more than one child were born, the success is proportionately greater. If dreaming of a miscarriage, then it means failure in some projects. An unnatural childbirth indicates dangerous disorders. For a woman not in reality pregnant to dream of giving birth to a son, success will follow her in all enterprises. If a man has this dream, gain, riches and profit will be attained slowly. The dream of giving birth to a fish represents a child in poor health. To dream of childbirth or giving birth to a rat, cat, snake or other monster, symbolizes the unsuccessful deals and poor health to the one who dreamed of it.
(See Fish)