Question

what are two things that the mudskipper can do (that other fish cannot do)?
breathe air
lay eggs
fly
walk on land

Explanation:

Mudskippers are unique among fish. Most fish breathe underwater using gills, but mudskippers can breathe air (they have adaptations like moist skin and modified gills for air respiration). Also, most fish are adapted to move in water, while mudskippers can walk on land using their pectoral fins. Laying eggs is common among many fish, and flying is not a capability of mudskippers or most fish. So the two things mudskippers can do that other fish generally can't are breathe air and walk on land.

Answer:

• breathe air
• walk on land