D should be the answer as they are no longer able to perform sexual reproduction without the other fish. Therefore, they would die off because they have lost the partner needed to reproduce.
Hope this helps!
{{-Hello Pumpkin-}}
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I think it is the following;
Reproduction
Multicellular or Unicellular
Autotroph or Heterotroph
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I am so sorry if this is not correct.
Answer:
The number of offspring produced is often related to the amount of parental care. Typically, the higher fecundity, the lower the amount of time parents devote to caring for the offspring.
What organ integrates the brain nervous organs with the endocrine system? Hypothalamus