Total solids mean all solid matter is either suspended or dissolved. Dissolved solids cannot be separated from water by sedimentation or flocculation. Solubility is the ability of a substance to dissolve in another substance. This is a hard question to answer. Some aquatic species survive well in highly turbid water.
Most aquatic species survive better in waters with low turbidity.
Suspended solids prevent sunlight from reaching aquatic plants. Without sunlight, photosynthesis cannot take place. When photosynthesis cannot take place, plants cannot produce oxygen. This reduces the concentration of dissolved oxygen in the water. Fish must have dissolved oxygen in order to live.