Water tanks used for raising fish larvae and fish larvae care equipment

Abstract

The invention relates to a water tank (10) for rearing fish larvae comprising: a flat surface (11) extending horizontally; a pair of curved surfaces (12) connected to one end and the other end horizontally of the flat surface, and extended upwards and outwards in opposite directions horizontally; and a pair of side surfaces (13) connected correspondingly to the pair of curved surfaces, and extended upwards. The water level satisfies the condition 1.12 < W / H < 1.90, where w (mm) is the horizontal distance between the corresponding upper edges of the pair of side surface sections, and H (mm) is the height from the flat surface section to the corresponding upper edges of the pair of side surface sections.