If you are expecting an answer like "Axolotl" you would be wrong because Axolotls are salamanders they are not fish. The Lungfish uses its fins to walk but swims well, The same applies to all of the other so called walking fish.
The Frogfish
Frogfish for one
It is thought that millions of years ago, fish were able to walk on land, and they became adapted to swim over years, as their legs become fins
according to one internet site......the Tripod fish uses its fins mostly to stand, but can walk gently along the sea floor.
A Mudskipper is one of the fish that can walk on land.
Fish are born to swim, they learn naturally like we learn how to walk
Seals have flippers while fish have fins. They are derived from the same structures but used by different classifications.
Mudskippers are amphibious fish, able to walk out of the water on their pectoral fins.
a fish swims by moving its body sideways and then swimming and then getting and swimming in the lake where all the other fish tease him because he cant swim and he just lays at the bottom lonely with no friends
no.the axolotl are salamanders and the walking fish are actually fish that walk on their fins
Fish are aquatic creatures, and have fins to swim and gills to take oxygen from the water. Most reptiles are terrestrial, many have legs, and they breathe using lungs.
Animals swim because they have these special structure, and this are the fins and tails, but they cannot swim if they cannot breath under water and this is called gills. It really depends on the type of animal you are talking about. If you are takling about a shark or fish. Then, see above. If you are talking about an animal such as a hippopotums then they simply do what we humans call a 'Doggie paddle' they use their legs to basically 'Walk' through the water.
Mudskippers can walk on their fins so a small incline should cause little problem to them. So yes they can.