This is called fin congestion.  The cause is usually poor water quality.  Long finned breeds are usually the most prone to it.  Ammonia and organic wastes must be kept very low when kepping fish with long fins.
If caught early enough, a simple 50% water change will usually clear it up in a few days.  If not, change another 50% and add 1 tsp. of salt per gallon of water.  I would also, add melafix according to directions.  I would also add extra airation in the form of a air stone.  Methylene blue can also be used.  However if the fins start to fray then it is a bacterial infection and myust be treated with an antibiotic such as pennicillin or tetracycline.  If there isn't a cure after 3 days, change out the water and repeat the treatment.
The surest cure of fin congestion is prevention so make sure your water quality is maintained at all times.  Keep the temperature and the ph in the mid range and ammonia and nitrates very low.

Well that's a new one for me! What is red pest?  Never heard of it!

Red pest, as ive read from numerous veterinary and aquatic specialist sites, is an internal bacterial infection whose primary symptoms are red "bloody" streaks along the body and/or fins. Other symptoms include erratic swimming, hyperventilation, and hollow stomach. so far, Sonorus exibits the red streaks and erratic swimming. If i dont treat it tonight (which i whole heartedly intend to do. I hate college right now.) the bacteria could cause ulcers or even death.

See? I do my research! unfortunately, I had a panic moment. I was hoping someone else had had experience with this affliction.... :S

Adding salt to her bowl would be good.
I would do limit feeding tho...as you know when they eat they poop and when they poop they pollute!

put aquarium salt on your list.
Regular table salt has binders in it that are toxic to fish.

Alright. I've added the tetracycline... disinfected her tank... added aquarim salt... aaaaaaaaaand shes not doing anything. She's sitting on the bottom of her bowl. Moving occasionally.. is this a sign shes not accepting  the treatment or does she just need to adjust?

well ive got her meds in there now. she just seems to wanna sleep and rest... maybe do a headstand or two.. which isnt entirely normal... ohp there she goes again... nuther headstand.... she gets active when i feed her. so im feeding her supper in small amounts... nother headstand... is that normal? i took her rocks out... I think she misses them..

K ill keep that in mind.. She's tried to get out before, at which i yelled "WTF st*pid FISH?!! YOULL DIE IF YOU COME OUT HERE!" that kinda kept her in there.

what about the headstand thing? is that normal?

no its not normal... maybe shes hungry.... but i dont want to over feed... ugh!! i dont know how this happened... it just popped out of nowhere and now shes acting like this... Im so scared... 

I definitely checked with numerous sites, and the pet store person (who has had the disease before) so im pretty sure i know what it is. I mean, panic can usually produce better answers than passiveness can. It's scientific name is hemmorhagic septicemia, in case you were wondering, and after the first treatment, Sonorus is more active.. no more headstands, and shes eating all that i'm giving her. I'll do another treatment today. She's starting to develop red sores on her body though. more than yesterday, and its affecting her other fins too. I may start forcefeeding her meds... after all the infection is on the inside...

So she's getting better already?

Don't worry, I just wanted to make sure that you were certain that this is the case with your fish. Never nice to panic for nothing and treat your fish for the wrong disease. Might do more damage than good.

Diagnosing an illness online is often a hit and miss thing because you don't have the subject that is ill right in front of you to really see what is wrong with it.

Remember to quarantine any new fish you get , because you have to be really lucky to get a completely healthy fish from most pet stores nowadays.

Hopefully Sonorus will get better soon.

Oh no, i have to give you an A+++ for the superhuman efforts you have put in the past few weeks trying to keep Sonorus healthy. Seems like she went from one illness to another and probably would not still be around without such a dedicated owner like yourself.

Great to hear (: But just for your info, it's the new fish that should be quarantined. Which I guess you'll do since you have salt in the new tank already and Sonorus safely in another bowl d:
Remember to quarantine for at least one week! Preferably two, and look closely at the new fish if you can see any strange behavior