2007-02-01 06:40:02 · 13 answers · asked by catgirl0052 1 in Science & Mathematics ➔ Zoology
shark because they have 2 fins one on there back and the other on there tail
2007-02-01 06:44:13 · answer #1 · answered by Anonymous · 0⤊ 0⤋
I'm gonna guess that either the tank is relatively new or you've just added some/all of those fish? If so, I think this tank is cycling. If you don't know what cycling is then I recommend you do plenty of research (lots of good info online) but the short version is... 1. Fish produce ammonia (ammonia is toxic to them) 2. Bacteria that grow naturally in tanks turn the ammonia into nitrite (nitrite is also toxic to fish) 3. Other bacteria that also grow in tanks turns the nitrite into nitrate. Nitrate is less harmful to fish in low levels. You keep levels low by changing some of the water regularly. If your tank or fish are new then the bacteria in there are suddenly finding they have far more food (ammonia) than they used to have and so are breeding like crazy. This is causing the cloudiness you can see - its bacteria. Eventually it should clear as bacteria levels get to the right amount to deal with the ammonia. In the meantime, however, your fish are exposed to that ammonia and it is killing them. This can be confirmed by testing your water. If you don't do this already it's worth getting a test kit (I use API Master kit by there are many as good). You can also take a small sample of the tank water to a good local fish store who will test it for you. Any ammonia or nitrite present is dangerous.If there is any, I would say it's probable the little guys are just succumbing first. They need that tank to cycle asap (enough bacteria to grow to handle the fish waste). Not much you can do to encourage the bacteria really but you could either temporarily rehome the fish in a cycled tank or keep up water changes very regularly to keep ammonia/nitrite levels low (less than 2ppm) and use something like Seachem Prime which detoxifies them both to keep the fish safe from the 2ppm that is there. It's also worth checking your tank filter is up to the job. For 50 gallons it needs to be one rated for 500 gph. If you don't have a filter - get one asap. If you do but it's rated lower then consider getting a 2nd. It can either be enough so they both come to 500gph (i.e. if yours is rated for 100gph, get one rated for 400gph) or can be the full 500gph on it's own. Either way leave the current filter running when you add the new one as the current filter has already started cycling. In time, you could remove the lower rated filter if the new one is big enough on it's own but I wouldn't do so for 2-3 months yet. I certainly wouldn't medicate or start thinking along the lines of dropsy until you are absolutely sure of ammonia, nitrite and nitrate levels in your water. That's always the first place to start.
2016-03-29 00:07:13 · answer #2 · answered by ? 4 · 0⤊ 0⤋
It is most likely a dolphin, because sharks rarely swim together, and if they are mating then they would be much deeper than the coast. Also dolphins take care of their young for a long time. But it all depends on what kind of fin you saw.
2007-02-01 06:45:00 · answer #3 · answered by Ilya G 1 · 0⤊ 0⤋
More than likely a shark, although some sharks only show one fin.
2007-02-01 06:45:42 · answer #4 · answered by Anonymous · 0⤊ 0⤋
depends on the shape of the dorsal fin. and usually dolphins travel in pods so you'd usually see a lot of fins on the water surface. if it's solitary, there are chances that it might be a shark. sharks' dorsal fins are also relatively larger and sharper than most dolphins'. and dolphins' fins have more of a curve to it as compared to that of sharks'.
2007-02-01 06:43:23 · answer #5 · answered by rfedrocks 3 · 0⤊ 0⤋
Shark, dolphins rear fin is horizontal to the water, sharks is perpendicular...unless there are two dolphins.
2007-02-01 06:43:29 · answer #6 · answered by Jon C 6 · 1⤊ 0⤋
it is the dreaded wampus tigre cat fish. More destructive than a great white shark, faster than a baracuda, greater in girth than a tricky sperm whale and rarer than a 200 pound bull frog.
Beware, lest you become another victim and turn into fish poop and that we all know is on the bottom of the cess pool.
2007-02-01 06:44:08 · answer #7 · answered by Anonymous · 0⤊ 0⤋
shark
2007-02-01 06:42:44 · answer #8 · answered by shadouse 6 · 0⤊ 0⤋
are the fins side by side (dolphin)? or one in front of the other (shark)?
2007-02-01 06:43:14 · answer #9 · answered by Hanz 2 · 0⤊ 1⤋
2 fins = dolphins, cause sharks don't hang out together.
2007-02-01 06:42:23 · answer #10 · answered by Kelly 2 · 0⤊ 3⤋