Question

Fish living in coastal estuaries are often stenohaline

• A. A species which adds up only a small proportion of the total biomass of a community yet has a huge impact on the community’s organization and survival.
• B. A common species that has plenty of biomass, yet has a fairly low impact on the community’s organization

Answer 1

The correct option is B A common species that has plenty of biomass, yet has a fairly low impact on the community’s organization

Fish living in coastal estuaries and tide polls are often euryhaline (tolerant to changes in salinity) as are many species which have life cycle requiring tolerance to both fresh water and seawater environments such as salmon and herring. Stenohaline organisms can tolerate only a small range of salinity for example goldfish.