Is there a fish that can live out of water for a considerable length of time?

Only a few types of fishes can survive in terrestrial environment for more than a couple of minutes. Perhaps best known is the mudskipper (photo, below), which is a (10 to 12 cm) froglike go by that lives on the mud flats along mangrove shores of the Indo-Pacific region. When the tide moves out the mudskippers stay on the flats. They have long pectoral fins with which they propel themselves, hopping about like frogs. Their big, bulging eyes also contribute to their froglike appearance. Mudskippers do not have to go back into the water as long as their gills are kept moist. They spend more time on land than in the water. Why, then, are they considered to be fish? According to ichthyologists, mudskippers have all that it takes to be a fish, they are finned, gill-breathing vertebrates. Though they prefer basking in the Sun, they need water in order to breathe and carry it on land stored in spongy sacs in their heads. They gulp air, mix it with the stored water and pass it over their gills, which, like their skin, must remain wet. During the age of fish 350 million years ago, a season-ally wet and dry climate encouraged the development of the fish that became terrestrial animals; only fish that could take oxygen directly from the atmosphere would have survived in water that was shallow, warm, stagnant and thus oxygen-poor. Still, only one small group of fish developed the other traits needed to become entirely free of the water: strong limbs to contend with gravity and a way to retain moisture without having to stay wet. This group of fish, forced to change drastically emerged from the water completely and adapted to life on land. They evolved into amphibians, reptiles and mammals—including us. The mud skipper, on the other hand, came out on land but never went anywhere. This odd fish has virtually remained unchanged for 30 million years."