Need Help Identifying These Corys!

[eaglesaquarium]

Alright, about a year ago, I bought 4 cories from a LFS that is very poor at identification...  3 were in one tank marked "large cory" and the smaller one was alone in a tank marked "small cory".
 
At the time, I thought they were all trilineatus, but the one was younger than the rest... over the past year of observation I have found that they are clearly NOT the same species.  First of all, the larger cories are still larger, and the smaller is still smaller.
 
Second, the 3 larger ones are almost always together, while the 4th as always been rather distant.  Occasionally it will join the group, but most of the time it is separate.
 
 
I need to know what they are specifically, so that I can try to rectify the numbers... I am now in a position to be able to get EACH group up to 6+ of their specific species (assuming I can find more of the same).
 
First pic:  large cory, I believe to be trilineatus, but I could be wrong (sorry the pic isn't better or zoomed in more...) 
http/www.flickr.com/photos/56876192@N03/8452156678/]

[/url]
http/www.flickr.com/photos/56876192@N03/8452156678/]Trilineatus?[/url] by http/www.flickr.com/people/56876192@N03/]eaglesfan54[/url], on Flickr
 
Second pic: small cory, I don't know what it is...
http/www.flickr.com/photos/56876192@N03/8451065865/]

[/url]
http/www.flickr.com/photos/56876192@N03/8451065865/]Who dat?[/url] by http/www.flickr.com/people/56876192@N03/]eaglesfan54[/url], on Flickr
 
 
Contrasting the two, besides the obvious size difference, "large cory" is a full 2.5 inches in length, maybe 3, while the "small cory" is closer to 2, maybe slightly larger.
 
The "small cory" has a much shorter "snout" and it plunges down almost vertically off the top of the head, while the "large cory" has a longer, sloped "snout".
 
The "large cory" has broken pattern of markings along the "3-line" area, while the "small cory" has nearly perfectly straight lines broken by the "3-line" marking.
 
 
If I could get a better closeup I would, but unfortunately I can't.  Any information would be helpful, because I really do want to get the right species... not just fish that look the same.

 

[eaglesaquarium]

I went over to planetcatfish for some help identifying them.
 
First response indicates that the larger 3 are not trilineatus, but rather could be leopardus.  
 
 
And once I was able to really look more closely at the trilineatus as being different from my big three, I am starting to believe that the smaller one may actually be the trilineatus.  

 

[JenCliBee]

I would most certainly go with the PC id, the small one is certainly a trili and the larger i would be 99% sure even with that picture to be C.leopadus .
.

 

[eaglesaquarium]

Thanks.  
 
Yes the pictures are terrible I know.  I was using the built-in camera on my laptop, which doesn't have a zoom capability, not to mention that I have to look at the screen to line it up.  I might be able to get a better pic tomorrow, but no promises.   
 
Thanks again, I do appreciate it.  Since I'm getting more cories, I wanted to make sure that I did right by the fish I have and get the proper species.  I feel bad for my little trilli...  she's (I'm pretty sure she's a female) been lonely for so long.  She's been hiding by herself most of the time in the new set-up, more so than in my home tank.  I think she shoaled with the pandas more than the "leopards".

 

[JenCliBee]

No need for another pic, there good enough to be sure tbh
 
 
I'm sure the trili will pick up when she has some friends to play with and you never know, you may even get some breeding on the go .

 

[eaglesaquarium]

I got another shot of one of the C. leopardus... They are rather camera shy...
 
http/www.flickr.com/photos/56876192@N03/8455191955/]

[/url]
http/www.flickr.com/photos/56876192@N03/8455191955/]C. leopardus in tank Feb.8.2013[/url] by http/www.flickr.com/people/56876192@N03/]eaglesfan54[/url], on Flickr

 

[JenCliBee]

That pic has confirmed it for me

 

[eaglesaquarium]

Here's something else you may enjoy...
http/www.flickr.com/photos/56876192@N03/8455568959/
 
 
They are coming out a bit more than at first... They just aren't all that comfortable in the new tank yet, I believe.  When the lights are out, they are more apt to roam - I got the pics after the room was dark and empty for about 4 hours... I just happened to be at work late that day.   They are coming out when the classroom is empty, but not too much when its full.

 

[JenCliBee]

Really nice mate, looks to be 1 female and 2 males too, really nice ratio for breeding .
 
Your description of them hiding when there is alot of people around is very common, all mine have done this when we have had people round but once things have quieten down and it's not so busy, they have gone back to showing there normal interactive behaviour again.

 

[eaglesaquarium]

I can tell the gender of my pandas, but not these guys...  Looking closer at the video (and knowing that you said 1 female and 2 males) allowed me to look for the difference, and I think I see it.  The one cory does look ever so slightly larger than the others...  Not sure I would have noticed without you saying anything.  I thought they were all female.  I'll look closer at them again when I get a chance.