All anglers 18 and older must purchase a fishing license, and appropriate tags and endorsements. Children younger than 12 years do not need a license to fish or shellfish. Can I help my child fish without a license Oregon? License requirements Kids 11 years or younger don’t need a license. Youth 12 to 17 years…

Can you use rainwater in a saltwater aquarium? Don’t use it!May 30, 2015. Is rain water safe for fish? If you don’t want to use tap water for your aquarium and don’t want to pay for bottled water at the store, one practical option might be to use rainwater. However, rainwater tends to have very…

Ammonia is also formed as uneaten feed or other organic matter in an aquarium decomposes. High concentrations of ammonia in the water make it difficult for fish to eliminate ammonia from their bodies. This buildup of ammonia can cause stress, gill and internal organ damage, and eventually death. How much ammonia can fish tolerate? Ammonia…

However, yes, they can hear your voice. They just know someone is speaking. They can associate sounds with action, though. For example, if you are to say your betta fish’s name – let us call him George – each time you sprinkle food in his aquarium, he will eventually associate the sound of “George” with…

The mangrove killifish is both male and female; it self-fertilizes for its entire reproductive life. In fact, about 2 percent of fish species display some kind of hermaphroditism, or roughly 500 different species worldwide. Clownfish carry both female and male reproductive organs. Can two male clownfish mate? Two males will become mates and the larger,…

Is seaweed bad for fish? Tropical fish have evolved to digest aquatic based veggies more so than we humans typically eat. Seaweed and other aquatic based algaes are best for both tropical and marine fish and they can help improve the immune system and offer anti-inflammatory benefits also. Is dried seaweed good for fish? Laver…

Many species of fish, like the kobudai, are known as “sequential hermaphrodites”: they can switch sex permanently at a specific point in their lives. The majority of “sequential hermaphrodites” are known as “protogynous” (Greek for “female first”): they switch from female to male. Do fishes have genders? You can determine the sex of your fish…

Can you drown a fish pulling it backwards? Knowing what you now know about fish, gills, and all the amazing wonder that fish are, you could be wondering can fish suffocate if they are pulled backwards through the water. The simple answer is yes, they can. Their gills can’t gain access this way as easily….

Gills and lungs are designed for use in water or air, and they’re much more efficient in their natural habitat than the other. By considering the word “drown” you realize that fish don’t die through the inhalation of water. So while fish can’t drown, they can go through a similar experience when out of water…

Krill – a shrimp-like crustacean – forms the basis of the marine food web for whales, seabirds, fish, squid, seals, and sharks throughout the world’s oceans. Commercially valuable salmon, rockfish, flatfish, sardines and squid thrive on krill. When abundant, animals migrate thousands of miles to feed on krill. Do large fish eat krill? Antarctic krill…

Fish get infected with parasites when they feed on intermediate hosts. The definitive host for fish roundworms are marine mammals like seals and dolphins and birds that feed on fish like cormorants and seagulls. These hosts shed eggs in their faeces which hatch into larvae in the water. How do you treat intestinal parasites in…

Nearly 1/3 of all freshwater fish are threatened with extinction. In 2020 alone, 16 freshwater fish species were declared extinct. Since 1970, mega-fish—those that weigh over 66lbs—have declined in number by 94% and migratory freshwater fish saw a 76 % decline. What year will we run out of fish? The world’s oceans could be virtually…