Yes.
Frogs don't breath through gills. They breath through there nostrils but as young tadpoles they have gills and through the process of metamorphosis they grow lungs and loose their tails and grow feet.
because they want to breathe and hunt for fish
Some fish and amphibians have gill slits at some point in their life cycle. These structures are used for breathing and are characteristic of early stages of development before they fully transition to a different mode of respiration.
To determine if an unknown animal is a fish or an amphibian, observe its skin and respiratory features. Fish typically have scales and breathe through gills, while amphibians have smooth, moist skin and can breathe through both gills (in their larval stage) and lungs (as adults). Additionally, consider the animal's habitat: fish are primarily aquatic, whereas amphibians often require both aquatic and terrestrial environments for different life stages. Lastly, check for the presence of limbs; amphibians usually have limbs, while most fish have fins.
life created the atmosphere through repiration and if we humans some how evolve to breathe nitrogen we can breathe something else out like Carbon Nitroxide
It can be difficult to tell if a fish is dead or in shock. Look for signs of movement or breathing, such as gill movement or fin twitching. If there are no signs of life, gently touch the fish to see if it reacts. If there is still no response, it is likely dead. If you are unsure, consult a veterinarian or experienced fish keeper for guidance.
Stephen M. Gill has written: 'Life's vagaries' -- subject(s): Fiction, Social life and customs
Putting air in any aquarium is simple. Fish actually breathe oxygen, not air. As water passes over a system of extremely fine gill membranes, fish absorb the water's oxygen content. Gills contain a network of fine blood vessels (capillaries) that take up the oxygen and diffuse it through the membranes. So we are looking to get bubbles and some kind of plant life in the tank. A filter can easily make bubbles and give oxygen to your fish. Live plants also put off oxygen.
The dolphin is a sea animal that is not a fish but has a streamlined body. As a marine mammal, it belongs to the cetacean family and is known for its intelligence and social behavior. Dolphins are adapted for life in water with their sleek, torpedo-shaped bodies, which help them swim efficiently. They breathe air through a blowhole and give live birth, distinguishing them from fish.
the inhabitants could have special adaptations, such as fish have gills that allow them to breathe under water.
Emma Williams Gill has written: 'Home life in the Bible' -- subject(s): Biblical Sociology, Social life and customs
People aren't fish, and can't breathe under water. Our lungs can't extract (enough) oxygen to sustain life from water. We'd drown.When people do breathe under water, they do so with the help of equipment that basically let them take a bit of the atmosphere with them, allowing the lungs to work just like they were still above the surface.