Lone angel in need of a friend?

they do best in groups but a group may not fit in your tank size .. which is? moreover, getting more fish after one of yours dies is not a good idea. figure out 'why' your angel died or the next one may die as well. have you checked your water quality?

Fin rot is usually a water quality issue or a stress issue. How long has your tank been set up and what are your ammonia,nitrite and nitrate readings? What other fish do you have in the tank?
I also hate to tell you, but a 20g long won't work with angels when they grow up..
Cathy

I highly suggest you do not get another angel for your twenty g tank. Ditto on the previous posts. Angels grow to be large fish, they need the heighth of a tall tank. IMO, I dont think an angel belongs in even a 20 high.

Blue

angels can vary in size. generally it is best to get a taller tank.

altums can get very large where scalare are considered a medium sized angel( still with a body of up to 6") leopoldi are generally smaller
I do know that if a death hits a pair of angels(mating) the lone mate withdraws. I had a pair where the female died..the male hid ..I added what I hoped was two females(turned out they were) he paired up with one..I moved the third wheel to a different tank. he is back to spawning. and out and about..tho he attacked his reflection the other day and I thought he killed himself...sheesh.

that said..you need to establish why the other angel died..get a check on the water parameters. before you purchase anymore tanks.

angels would not do so well ina 20long they have tall fins and benefit by a tall tank(they can be kpet in t a 20 tall but I usually recommend a 29 as minimum for a pair.

20 longs are great tanks for rams tho.