Fresh water fish have a higher concentration of salt in their blood and body tissue than in the water that surrounds them. This puts them at a constant risk of dehydration, which seems ironic as they live in water. To compensate for this, the fish must actively drink water through their mouths. Can a fish…

Yes, if brother and sister are bred together there will be a higher incidence of negative mutations than if two unrelated fish were used, just like with people which is why many people feel uneasy about doing this. So, new breeders take heart and don’t worry about spawning brother to sister. Does inbreeding affect fish?…

Is 70 too cold for fish? When it’s too warm, their metabolisms and breathing speed up, and they use more oxygen. The problem is, as water warms up it holds less oxygen, which further stresses the fish. Once again, they become more susceptible to disease, and in extreme cases, they can experience organ damage or…

Fishes also vary in the ways they produce sound. Thus far, over 800 species of fish from 109 families are known to produce sounds. Proximity to extremely loud sound sources can result in hearing loss, bleeding, tissue damage, and even death. Are fish affected by loud music? Small fish may feel the pressure of loud…

Unfortunate to find themselves floating on top of a creek or a pond, stinkbugs will not be eaten by fish! While fish eat caterpillars, crickets, ants, and flies that find their way to the water, most fish will spit out the average stink bug. 7. Can you feed stink bugs to fish? So do daddy…

The fish tape method works as follows: Feed the tape: Feed the end of the tape into the end of the conduit you wish to pull from. Continue pushing the tape through the conduit and unwind the spool as you go. When the end of the fish tape emerges from the end of the conduit,…

In a study published in the Royal Society Open Science journal, a team details the case of female cichlid hybrid fish, a freshwater fish often kept in aquariums. The team noticed that the fish were able to impregnate themselves, producing healthy offspring who behaved — and reproduced — totally normally. Can fish reproduce by themselves?…

Whilst some fish will tolerate life outside of their optimal pH range, sudden changes in pH will send some fish into shock. Much like a sudden drop in temperature, large, quick changes in pH can be instantly lethal to fish. Is it safe to move fish from one tank to another? If the pH and…

Certified Organic Scandinavian Rainbow Trout Oil is the premium fish oil that sets the benchmark for environmental sustainability and nutritional quality, as well as freshness and purity. It is the world’s first certified organic fish oil because it comes from a clean, sustainable, fresh-water source. Does fish oil need to be organic? However, there is…

Taking fish oil can even decrease the chance of another heart attack or stroke, as well as the risk of death from an attack. But its ability to slow clotting means that it might also cause excessive and prolonged bruising — and bleeding — especially when taken with other blood thinners, like aspirin. What supplements…

Snakes and fishes are common animals in reports dealing with unusual animal behaviour prior to an earthquake. Maybe these senses help them to detect environmental changes, like weak foreshocks or variations in the local electromagnetic field, before a strong earthquake. What fish can detect earthquakes? Called Ryugu no Tsukai, or Messenger from the Palace of…

The water under the ice, freshly re-oxygenated from the fall turnover, remains at 4 degrees Celsius all winter long, allowing fish and other aquatic life to survive until the spring thaw. Iced-in fish don’t hibernate, but they do slow way, way down. Fish are ecotherms. Can fish survive being frozen in ice? The surprising answer…