5 gold tetras (I love the schooling they do)
1 Betta - great fish - keeps everyone in line
1 Rainbow shark (bought him a cave and he loves it in there)
1 pleco cat fish that sucks on the glass and everything else.
2 Peppered Corys (called John and ponch) they clean side by side
1 GloFish (the only one of the original three still alive - very active fish)
1 Orange and black fish - no idea what it is but it looks cool - poos are a mile long!
1 Betta - great fish - keeps everyone in line
1 Rainbow shark (bought him a cave and he loves it in there)
1 pleco cat fish that sucks on the glass and everything else.
2 Peppered Corys (called John and ponch) they clean side by side
1 GloFish (the only one of the original three still alive - very active fish)
1 Orange and black fish - no idea what it is but it looks cool - poos are a mile long!
1 inch per gallon rule is great, however when properly calculating bioload you can sometimes beat this rule quite easily, considering where your fish like to hang out. (top/mid/bottom dwellers)
-You're betta will probably be a mid/top dweller since it surfaces for air.
-Your pleco is a bottom feeder/ on the glass and objects
-The rainbow shark is a bottom feeder, and it is VERY territorial. Although it's not as nasty as a redtail shark thank goodness for you . Note it is a semi-aggressive fish, and pretty much every other fish you have in there is a peaceful community fish. It should be okay though given in the future you do not put another rainbow in, they can't get along with their own kind (this applies to redtail sharks, I think it does too for rainbows, someone will correct me if i'm wrong) The reason why they can't coexist with redtail sharks is that they confuse each other for the same species (the tail).
-if your 'orange and black fish' is what I think it is, it is a gold fish. goldfish are recommended lots of tank space because they are pigs. They will never stop eating if foods abundant, and they will pee and poo more than half your fish combine! (the little ones that is). Plus goldfish are coldwater fish, most of yours are tropical hmmm... In this case best to let the goldfish adjust to the warmer temps since they can take it. If it is not a goldfish please disregard this part.
Now let's go back to the 1 inch per gallon rule and the 3 parts of the tank fish dwell in. This is my original though process btw, as it seems to make very good sense. Aside from knowing proper tank capacity based on bioload, you should understand tank space. You could have the right tank capacity of fish but it wouldn't be cool if they were all bottom feeders, everyone will get in each others way (and if you have a semi aggressive like the rainbow shark) he will get irritated by all the other bottom feeders in his territory). You also don't want a mass of mid dwellers, it might cause the weaker ones to become top/bottom dwellers. Nothing bad may be noticeable, but if they are taken out of their habitual elements, well you can't gaurantee they will live life to its fullest (growth/happiness). If you can formulate a community of fish where you have the max allowed for bottom/mid/top dwellers, then you can beat the rule of thumb for inch per gallon, given you do exceptional tank maintainence. Another thing to care for is the kind of room your fish need. Some fish aren't all that active, others need tons of swimming room. (I have tiger barbs that will bounce off the walls and frantically swim when cramped, I know this because I punished a bully and put him in a pitcher of water for an hour for being bad). IE: I have a 20G long tank and I'm sure my barbs would hate anything short of 3feet long because they love to swim and school (end to end). Width of tank would be important persay for fish with more girth and such. Just consider the mobility of your fish to correlate proper tank dimensions, not just volume.
This was a long post to read I know, but I took in all the advice I got, nice and mean and I learned a ton, so I felt you deserved the same love!
GL With your tank SIR