The following are catadromous fishes, except?

• Freshwater eel

• Salmon

• Tapiroid Grunter

• Lobed-river mullet

Answer explanation

Salmon is an anadromous fish where it spends more of its life in the sea and migrates to freshwater to spawn.

Which of the following does not belong to the group?

• Mussel

• Oyster

• Barnacle

• Scallop

Answer explanation

Barnacle is a crustacean

Which of the following does not refer to a fish?

• Sandfish

• emperor fish

• sea horse

• rays

Answer explanation

Sandfish is a sea cucumber belongs to echinoderm

Which of the following is not a lotic water?

• Dead Sea

• Pacific Ocean

• Bicol River

• Arctic Ocean

Answer explanation

Dead sea is a lake which is an example of lentic water

Which of the following does not belong to the group?

• Shark

• Ray

• Dolphin

• Skates

Answer explanation

Dolphin is a mammal and the rest are fishes