henward Posted February 15, 2008 Report Share Posted February 15, 2008 poo, pee, gills.... all can contribute to amonia where does amonia come from most when a fsh eats, i poos and pees i assume:D but does the amonia come from that mostly or from its gills? so even if you dont feed it the remnants of food in its belly and/or the fish using energy produce it? Quote Link to comment Share on other sites More sharing options...
snookie Posted February 15, 2008 Report Share Posted February 15, 2008 gills ? Quote Link to comment Share on other sites More sharing options...
livingart Posted February 15, 2008 Report Share Posted February 15, 2008 hi henward ammonia comes out of the back end of the fish, poos and wees the gills are used to take in oxygen from the water that is passed over them fish can drown when there is no dissolved oxygen in the water or the gill filaments are coated or collapse ie when they are taken out of water increasing the surface disturbance in the tank will help to increase dissolved oxygen in the water Quote Link to comment Share on other sites More sharing options...
henward Posted February 15, 2008 Author Report Share Posted February 15, 2008 i heard and kinda read ith no details though that gills also are used to excrete amonia large amounts of it any feedback on this? Quote Link to comment Share on other sites More sharing options...
alanmin4304 Posted February 15, 2008 Report Share Posted February 15, 2008 Humans excrete urea in their urine and fish excrete urea also including through the gills. I don't know if fish excrete all their urine through the gills but it is this that makes men sit cross legged when thinking about a little fish that tracks the urea and ends up in the wrong place with humans if they swim in its habitat. Bacteria change nitrogen compounds like urea to ammonia, nitrite, nitrate and back again. I am not sure if fish excrete ammonia also. Quote Link to comment Share on other sites More sharing options...
wasp Posted February 15, 2008 Report Share Posted February 15, 2008 You are correct Alan, the so called "dick fish" (among other names), of South American rivers, detects it's prey by smelling the ammonia which guide it into the larger fishes gills where it lodges itself by spreading it's frontal spines, then locates and bites blood vessels for food. The victim fish will sometimes writhe around frantically for a few minutes before dieing, or a bigger fish may survive. It is true that some people have fallen victim to this fish when they urinated while swimming, the fish is small enough to swim right up both male and female urinary tracts, I saw a video of a human victim of this the result was so nasty I don't even want to talk about it here! The advice is if swimming in a SA river wear tight fitting underwear. But anyway, yes, ammonia is excreted through gas & chemical exchanges that take place via the gills. Quote Link to comment Share on other sites More sharing options...
livingart Posted February 15, 2008 Report Share Posted February 15, 2008 you learn something new each day \thanks for the correction Quote Link to comment Share on other sites More sharing options...
henward Posted February 15, 2008 Author Report Share Posted February 15, 2008 yeah me too! new things learnt:D Quote Link to comment Share on other sites More sharing options...
wasp Posted February 17, 2008 Report Share Posted February 17, 2008 Different video than I saw before but I managed to find this. Not for the faint hearted! http://crackle.com/c/Extreme/Fish_Dick/1469083 Quote Link to comment Share on other sites More sharing options...
reef Posted February 17, 2008 Report Share Posted February 17, 2008 cool, that should stop people pissing in the water Quote Link to comment Share on other sites More sharing options...
alanmin4304 Posted February 18, 2008 Report Share Posted February 18, 2008 Should put a few cute wee fishies in the swimming pool Quote Link to comment Share on other sites More sharing options...
wasp Posted February 18, 2008 Report Share Posted February 18, 2008 Yeah, And invite that neighbour you hate for a pool party! :lol: Quote Link to comment Share on other sites More sharing options...
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