Why are catfish and carp found at the mouth of a river, while trout are found nearer the source?

Why are catfish and carp discovered on the mouth of a river, whereas trout are discovered nearer the supply?

Reply 1

Catfish and carp require much less oxygen than trout. The mouth of a river normally has much less oxygen and the world nearer to the supply has extra oxygen, so since catfish and trout require extra oxygen they usually are discovered on the supply.

Reply 2

The right cause could be “the degrees of dissolved oxygen on the mouth of the river and on the supply of the river”. The mouth of the river is the area the place it flows into the ocean, lake, one other river, reservoir, sea et cetera. The extent of dissolved oxygen on this area is just too low to help nice biodiversity. Organisms like catfish and carp can survive right here resulting from their low oxygen demand. For instance, catfish can survive in water with an oxygen content material of two.5 elements per million. In distinction, the extent of dissolved oxygen is larger on the supply of the river. Organisms like trout are discovered right here resulting from their excessive oxygen want. For instance, rainbow trout require minimal 5-6 elements per million dissolved oxygen for its survival.

Reply 3

c. genetic engineering clarification:

Reply 4

reply; atp and nadph;

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