Five of the most commonly eaten fish that are low in mercury are shrimp, canned light tuna, salmon, pollock, and catfish. Another commonly eaten fish, albacore (“white”) tuna has more mercury than canned light tuna. Do all fish in the ocean have mercury? Nearly all fish contain trace amounts of mercury, but longer-lived predators —…

The answer is yes, but not because water changes are inherently bad. Because the fish live in the water, and the changes happen slowly, they adjust to it. When a sudden, large water change occurs, it causes such a drastic shift in the makeup of the water that the fish often cannot tolerate it and…

Why is length-weight relationship in fish important? Length-weight relationships (LWRs) and relative condition factor are of great importance in fishery assessment studies since it provide information about the growth of the fish, its general wellbeing, and fitness in a marine habitat. What is the difference between total length and standard length of fish? The length…

Fish don’t “blink” their eyes quite like humans do. Our eyelids, both upper and lower, are equipped with glands that secrete the proper components onto our eye surface to keep things moist. Is there a fish that blinks? General consensus is that the shark (most — not all types) is the only fish that blinks,…

Is float tube safe? The durability and superior design of today’s U-shaped and V-shaped float tubes offer a safe and fun fishing solution when reasonable precautions are met. Human error has more to due with fishing float tube safety than the boat itself. How do you keep fish in float tube? 14 Quick Tips for…

A fish could be large enough to swallow a human. The largest fish known to man is the whale shark and that could probably fit a man in it’s stomach, Also the basking shark has the right kind of dimensions but both of these beasts eat plankton and small fish. Has a fish ever swallowed…

Fishers are “a mid-sized carnivore” (about 15 pounds) in the weasel family, according to the Pennsylvania Game Commission. But New Hampshire state wildlife officials shared the video and confirmed it was a fisher. “The fisher is trying to get the fox tired so he can kill it. Do foxes eat fishers? Fishers are important predators…

As you can see Corydoras catfish and bettas make great tank mates. While bettas will stay at the top of your tank, for the most part, Corydoras’ will stick to the bottom. Here are some of the main points to remember when introducing Corydoras’ to bettas. Corydoras’ need a pH between 7.0-7.8 and bettas need…

Algae is beneficial to an aquatic ecosystem; however, when levels get too high there can be problems. Some algae can release toxic compounds, but the most common source of fish kills related to algae is oxygen depletion. It is the extraction of oxygen for respiration in water at night that causes most fish kills. Can…

Are Goldfish bad for babies? The biggest choking hazard is allowing your child to walk around when eating. even something as innocuous as a goldfish cracker can choke a child who suddenly falls, because during that fall they may have a sudden inhale and that cracker hits the vocal cords that then spasm cutting off…

Bottled spring water is a more expensive alternative to tap water, but unlike distilled water, it hasn’t been processed to remove minerals and nutrients. This water will not have chlorine in it, either, so it is safe to use in betta tanks as long as the pH levels fall in line with safe betta levels….

While relatively easy to prevent, fin rot can be difficult to cure once it does set in, particularly in the more advanced stages. If left untreated, fin rot will eventually kill the diseased fish and may infect all the other fish in the tank as well. How long does it take for a bettas fins…