****Moved to correct area, Disease and disaster.**** please place new threads in the correct topic location.
I havent had angels before but have read allot about them because my daughter wanted some.... Immediatly when you said red fins I recognized this is a serious problem.... some kind of bacterial infection..... I copied something i found on the net..
"Angel fish that have red streaks around the mouth or base of the dorsal usually have a systemic (internal) bacterial infection. Do not use a heat treatment for any suspected bacterial diseases. Treatment for an internal bacterial problem is very difficult, unless you are knowledgeable about giving an intra muscular injection of the proper anti-biotic. If the angel fish is still eating, your best bet is to try a flake food that has an anti-biotic added to it. Angel fish that are very bloated, likely have a type of internal bacterial infection that has affected the kidneys. Angel fish exhibiting this symptom are usually too far gone to be saved. If you catch this type of angel fish disease early when the fish is still eating, then a medicated food with an antibiotic in it may work."
If you try and seems to be failing the best and most humane thing to do would be to properly euthanize your fish.... Prepare a 10gallon tank, place them in it, and slowly add some clove oil... the fish will fall asleep peacefully. Please keep us updated.