Guppy pestering glofish
Newbie question: I have a 20 gallon tank that is home to 3 male fancy guppies, 3 male glofish, and others. The guppies get along fine. Among the 3 glofish, the red one pesters the yellow one, while the orange one stays out of the fray. One of the guppies has been engaged in chasing the red glofish, and no other fish, night and day. I am wondering what to do about this, and have been contemplating returning the red glofish to the store to save his sanity. I recently found out that 3 glofish isn't considered a proper school. Will adding more glofish alleviate the problem? Will removing the red glofish just cause the guppy to refocus his attention on another target? Taking the guppy out isn't an option right now.
How many fish total are in the tank? I am trying to determine the species of the glofish, as there are a number of them that are listed by that name. Can you post any photos of your fish and your tank please? Decoration is important, how much do you have and does it cover lower, mid, and upper ranges of the tank? Again, pics of the tank and fish would help.
It is very likely that if you remove the red fish the guppy will take to bothering another. There may be ways to change the behavior if I know what the tank looks like and what other fish are in the tank, and how many of each.
Thank you for your reply! My camera is acting up, but I can describe the tank. It's a 20-gallon long that is 30"x12".There is a slender plant, which reaches from the bottom to the middle, on the right-hand side. More plants are on the way, but aren't in there yet. There is a castle decoration, with a moving draw-bridge and hidee hole, in the center of the tank. The substrate is gravel. Besides the heater, hood, filter, and thermometer, that is all that's in there at the moment. We have these fish: 3 male fancy guppies, 3 glofish, a plecostomus of the small variety, an upside-down catfish, a ghost fish, and 3 neon tetras, and 2 mollies. I understand that we are mixing hard and soft-water fish, but were told that guppies could handle that (I hope that info was correct). The glofish are of the genetically-modified variety and look like the ones pictured here: The GloFish | Practical Fishkeeping magazine
To start with, your glo fish are zebra danios. The other thing I notice is that you have too many fish for a 20 gallon tank. Adding more is not something I would advise...
Can you please find a photo online of your ghost fish? I'm not sure if you're referring to a ghost knife or a glass catfish, or etc..?
3 neons are not likely to last real long. Neon tetras need a large school of their own kind to do well. With the mollies, I'm curious if you have males or females?
As for the guppies, yes they can handle quite a wide range of conditions, but what each specific guppy can handle depends on what it was bred/born in. If it was born in soft water, it should have soft water, and vice versa.
As for adding more glo fish to fix the problem... thats a 50/50 shot. Considering your current population I would not suggest more fish of any species.
More than other fish you are in dire need of more decoration. A lot more, especially with the species of fish you list. The added decoration and plants is where I would start... while planning a larger tank before those fish grow enough to have issues in the current tank.
If you have female mollies, or even 1... then you can expect your population to grow for at least the first few months of bringing a female livebearer home. If you have a pair, you may discover the female doesn't last real long due to the constant chasing of a male. Female livebearing fish can have 30+ fry every 30 days, and when keeping both sexes the ratio should be 2 - 3 females for each male.
Focus on decor and plants.. thats the best solution I can offer at this point. If you can let me know what your ghost fish species is, then I could offer you ideas on what size tank would be appropriate for that stock level.
Thank you! Wow- looks like we got ALOT of erroneous info at the fish store. We're learning, though. We will get right on putting more decor in the tank. I read that the upside down catfish will particularly like floating plants or wood. We lost one of the guppies, and it seems as though his body was eaten by the plecostomus. The one that we lost is not the one that chases the glofish, however. I believe that our mollies are both male. At least, that is what we asked for, and they don't chase one another. Here is a pic of a ghost fish like ours: http://ourfish.tripod.com/pictures/glasscat.jpg.
We are looking at larger tanks, but would like to get a handle on this smaller one first, since we're beginners.
Would the LFS allow you to trade back some of your fish and allow you to add more of the same that you already have? Ditch the mollies, the upside down cat and say the guppies and add more neons, glofish and glass cats? Or go with 3 of the species that you like the most in greater numbers while finding a new home for the other tank mates.
Oh.. and in 99% of the cases disregard the info you get from your LFS. Somebody like Dawn here can provide you way more and better info than a vast majority of the LFS out there.
Thank you for your help. We CAN return the mollies right now, but no others at this point. And, yes, the pleco is a small variety. It seems our original aggression problem has been resolved in a sad way. We lost another guppy tonight- SEEMED perfectly fine this morning. The only guppy left is the one that was chasing the glofish, and he's not really interested in that right now, seeing as how he's lost a school. Poor guy. We don't know why we're losing guppies- I'm scrambling for info before we lose the last one, too.
I think there's some ich going on. We lost a molly today. I didn't see ich on the fish that died, but now that I know what I'm looking for, it's obvious that it's on the tetras, the last guppy, and the dalmation molly. I'm heading out right now to get medicine.
Sorry it took so long to get back, I have had much going on here. I am hoping you find a safe med to use. Upon viewing the link of your "ghost fish" I saw a glass catfish... and not all meds are safe to use on them while still being safe to use with the other fish in your tank.
I agree that something is not right, and I could list a number of possibilities I can already see by catching up on the thread. The sooner you get some decoration into this tank the faster your other issues are going to disappear. Stressed fish get ich so fast, and it is clear to me that your fish are suffering from extreme amounts of stress. Lack of decor to accommodate the present fish causes extreme amounts of stress.
Can you please also post your water params for ammonia, nitrite, nitrate, and pH, along with water temp as it is currently? It is vital to check those before adding medication to any tank. Some meds can be toxic if added to poor water params. Please use liquid test kits to obtain your results. Test strips are unreliable and inaccurate, and can mean the difference in life and death for the fish.
Also I want to note, if you can post a clear photo of your remaining molly we can then tell you what sex it is and how to tell the difference for yourself for future reference. It is very possible there is more going on in your tank than ich, and it is also very possible that ich is a symptom of a larger problem. I cannot stress enough about the decorations, and yes, lack of enough decor can bring an outbreak of ich as well as the other issues you describe thus far.
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