Tropical Fish Keeping banner

1 - 19 of 19 Posts

·
Registered
Joined
·
16 Posts
Discussion Starter #1
I have a 20 gallon long with ecocomplete substrate and I am going to be keeping a shoal of 6 albino cories in it. I got 2 yesterday from Petsmart since that was all they had so I went to Petco just now and got the only one they had there. The Petco cory is tiny and unlike the others he isn't at all active. He just sits at the bottom of his bag and only moves if I disturb him.

I'm worried the new cory is sick and if I add him to the tank he will make my other cories and fish sick. Should I add him and if not, what should I do? Should I take him back to Petco?
 

·
Registered
Joined
·
115 Posts
Hey ,
You said the lil guy is still in the bag ?? I take it that yo dont have a hosp or qt tank to put your new fishes in . You really need one just a small one for this reason . Being in the bag for long period days the oxygen will decrease everyday and in so the fish will become less active an less active daily .
The cory being inactive could be him bein alone they do lots better when in groups but you said you had more so thats good . I take it you knew that :p.
But cory's are very timid and at the same time very active if that makes sence .

He maybe sick , I cant say without seeing him / her . And even with pic its hard to say what if anything is wrong. Unless its like ick or something very easily visible you know , wich you may or may not have reconized .
Sory i couldnt be more help ,. If your uneasy about putting him in with others then dont I'd take him back to lfs ..That sounds like the best bet , if they will take it back ,
God bless
charlie

 

·
Registered
Joined
·
16 Posts
Discussion Starter #3
He was all alone in his tank for a while so I'm hoping that's what made him so shy. I put him in the tank and at first he was very still but now he's digging around a little bit. He's still not swimming with the other 2 cories though. They are much bigger than him so do you think that will be a problem.
 

·
Registered
Joined
·
115 Posts
Hey again ,
I'm glad to hear the little fella is doin better . I wouldnt worry to much about the size issue , although if you could find another tiny about his size or 2 :) he would prolly be more comfortable but thats just a guess , . They get more active the larger the group is .
But you do need to keep an eye on him as he could be sick , but i would still say his shyness will gow away with time and more corys ;-) . A little off topic but what kind of substrate do you have ? I recently read that corys need a fine sub as the gravel can ware there lil whiskers off / down as a result of rootin around in the sub , and they dont grow back either :shock: . just a thought ;-)
I hope this helps
God bless an keep me posted on him .:-D
Charlie & family
 

·
Administrator
Joined
·
5,465 Posts
Hi Leopardfire. I've kept Cory's for many years and I just keep adding them when I see them at the store. I have never seen aggression between diff sizes or species. They seem to know they all are of the same fish family. And I have kept several species together in the tank, not always meeting the group requirements of 3 of each. I usually have 6-7 at all times but sometimes there isn't a lot of choice at the LFS as you know!! When you see more, if you are going to add more, observe the tank for awhile, wander the store and come back and watch it again. Try to determine how active it is before buying. It is hard to imagine something so little, all alone in the tank when they are meant to be with their own kind. Stress from that is likely what kept him motionless. The more there are the more confident they will be to wonder your tank alone. They don't "school" ie swim together in the same direction. they shoal which means them like to be together, near by for comfort.
Be sure you have some sinking food, something that drops to the bottom. I use Shrimp Pellets.
 
  • Like
Reactions: charlie1881

·
Registered
Joined
·
294 Posts
The size difference is not a big issue for the Corys. The larger Corys may be more aggressive at feeding time and the smaller Corys may be a little more timid and hide more. This has happened in my tanks when I have reintroduced 3 month old babies back into the main tank. Just make sure that the smaller one has the chance to feed. If not you may want to try micro pellets or crush larger pellets.

Also, it can take a few days for the newly introduced Cory to get accustom to the new tank and its likely different water chemistry. At this point, since he/she is in the tank, just keep an eye on it for any issues.
 

·
Registered
Joined
·
16 Posts
Discussion Starter #7
Thanks for all the advice. The baby has only been in for a day, but already he's happily digging for food with the other cories. But now I have another question.

How much should I feed my cories? I have 3 right now and they eat all their food within half an hour. I gave them 2 pellets last night and I've given them 4 today since they keep eating them. The pellets are API bottom feeder pellets. Are those good?
Should I just feed the cories twice a day like my other fish, or do they need to eat constantly?
 

·
Registered
Joined
·
16 Posts
Discussion Starter #8
I got 3 corydoras to go in my 20 gallon long tank. I will be getting 3 more as soon as Petsmart gets a new stock. I have a bunch of questions about feeding them. I have API shrimp pellets for bottom feeders, but I don't know if they are a good brand. If they aren't, then what is the best brand of food for cories?

Also, how much do I feed each cory and how often should I feed? The cories eat the food that I drop in super quickly, so I've already given them 5 pellets today because they kept sifting the gravel like they were starving. Should I just feed them twice a day like my other fish and how many pellets would I use for 6?

Finally, what types of food should I give them so that they can have a varied diet? I heard that algae wafers and blood worms were good. Could someone please give me a detailed guide on feeding like pellets 4 days a week, algae wafers 4 days a weeks, and blood worms once a week. (I have no idea how often I should actually feed these things)
Thanks
 

·
Registered
Joined
·
22,557 Posts
Thanks for all the advice. The baby has only been in for a day, but already he's happily digging for food with the other cories. But now I have another question.

How much should I feed my cories? I have 3 right now and they eat all their food within half an hour. I gave them 2 pellets last night and I've given them 4 today since they keep eating them. The pellets are API bottom feeder pellets. Are those good?
Should I just feed the cories twice a day like my other fish, or do they need to eat constantly?
I tend to think we overfeed our fish. Once a day is sufficient, and then missing a day or two each week won't hurt. Fish should never be fed on the water change day, at least not prior.

I like to feed a variety of foods; I do recognize that the better quality foods available today are probably complete nutrition in themselves, but in feeding 4 different foods I do notice that some fish prefer this or that to other foods, so I stay with this scheme. Three or four different foods, in this case sinking foods, offered alternating. Fish do not need much in the way of prepared foods; and in a balanced tank there will be live food you can't see but they will get it.

Byron.
 
  • Like
Reactions: charlie1881

·
Registered
Joined
·
22,557 Posts
This issue was raised in your other thread, and it is best not to have two or more threads on the same subject, so I'm merging the two togethe; I used this one (on feeding corys) as the "main" since I think we dealt with the other issue.

As you here asked about brands of food, I will mention that I am now using New Life Spectrum, Hikari and Omega One as my main foods (flake/pellet and sinking). I also use the Nutrafin sinking tablets (substrate fish go crazy for these). All of these make sinking foods, whether pellet, tab or wafer. One at least should be plant-based such as algae, spirulina or kelp.

Byron.
 

·
Registered
Joined
·
294 Posts
I do flakes (no particular favorite) for surface and mid water fish and Hikari Micro Pellets daily (my favorite) and frozen blood worms occasionally for bottom feeders. Blood worms do a great job prepping some fish (Corys included) to breed.

It does sound like you are over feeding. When I use the skinny pellets (sticks) in my 30" long Cory tank with 9 Cory, I only feed them 2 pellets (around 0.8"x 0.2" size). Normal behavior for the Corys is to search for food in the tank. You can look and see that their belly is sunken in when they are underfeed. I as well skip a day of feeding every week or so.
 

·
Administrator
Joined
·
5,465 Posts
Fish should never be fed on the water change day, at least not prior.
Ohhhhh!! That's a new statement I have not seen before...!! Byron can you elaborate as to why?
 

·
Registered
Joined
·
22,557 Posts
Ohhhhh!! That's a new statement I have not seen before...!! Byron can you elaborate as to why?
Certainly. One should never feed fish prior to any planned disruption of their environment. The physical aspect of digestion requires energy, and the fish should be in a fairly relaxed atmosphere so the physiology can properly function. Much the same as humans being advised not to exercise on a full stomach, but wait a bit after a meal.

Water changes should preferably be done early rather than later in the day. This allows the fish to cope with the disruption when it is "freshest" as all animals are in the early morning, and it provides the rest of the day for them to settle down.

You could feed them later in the day, but as missing a day is in all respects good for fish, it is just as well to miss the water change day feeding altogether.

Byron.
 

·
Registered
Joined
·
398 Posts
Salutations Bryon;
I would never have considered this particular aspect of feeding fish in terms of relaxed atmosphere nor have I ever thought about the possible advantages of changing water in the morning as verses in the evening or afternoon. I must be committing some sins due to it takes me two days to complete a water change. Your way is a nice. I think I will try it if I can manage it.
pop
 

·
Registered
Joined
·
22,557 Posts
Salutations Bryon;
I would never have considered this particular aspect of feeding fish in terms of relaxed atmosphere nor have I ever thought about the possible advantages of changing water in the morning as verses in the evening or afternoon. I must be committing some sins due to it takes me two days to complete a water change. Your way is a nice. I think I will try it if I can manage it.
pop
I don't remember who told me, but I have always performed water changes in the morning. I generally start about an hour after the tank lights come on. One should never do anything for the first half hour [as it explains in my article on light] and I like to give them a good hour.

I do this when feeding on other days too, never earlier than an hour after tank lights are on.

Byron.
 

·
Registered
Joined
·
16 Posts
Discussion Starter #16
Thanks for all the feeding and water change advice. Do you think that for now I should feed 2 pellets per cory everyday?
 

·
Registered
Joined
·
22,557 Posts
Thanks for all the feeding and water change advice. Do you think that for now I should feed 2 pellets per cory everyday?
I have 30 corys in my 115g, and I put in 4 Nutrafin tabs when that food is fed (day one). When I feed shrimp pellets, which are pretty small, maybe 3/16 of an inch, I put in perhaps 9-10 (day 2). When I feed the veggie disks (day 3) which are about 3/8 inch across, maybe 4. And so forth. You have to consider the number of fish aside from the corys that might (and usually will) also eat these, and just ensure at least 1 gets to the bottom.
 

·
Registered
Joined
·
16 Posts
Discussion Starter #18
I've watched my fish and once the food lands, they don't try to eat it so it all goes to the cories. From the feeding ratios, I think that for small things like shrimp pellets you should feed a little less than 1 per cory per day. So if I have 6 cories I should feed 4-5 shrimp pellets per day and if they were bigger, then maybe only 3. Is this correct?
 

·
Registered
Joined
·
22,557 Posts
I've watched my fish and once the food lands, they don't try to eat it so it all goes to the cories. From the feeding ratios, I think that for small things like shrimp pellets you should feed a little less than 1 per cory per day. So if I have 6 cories I should feed 4-5 shrimp pellets per day and if they were bigger, then maybe only 3. Is this correct?
If the pellets are around 1/8 to 2/8 inches in length, then 4 at one feeding for 6 corys is sufficient, unless other fish manage to get the pellets.
 
1 - 19 of 19 Posts
Top