Possible Tumors On Glofish Tetra?


New Member
Reaction score

What is the water volume of the tank? 36 gal
How long has the tank been running? 15 months
Does it have a filter? Yes
Does it have a heater? Yes
What is the water temperature? 76°F
What is the entire stocking of this tank? (Please list all fish and inverts.)
6 glofish Tetras, 1 Gold Mystery snail, 1 albino bushynose pleco

How often do you change the water? Weekly
How much of the water do you change? 30-50%
What do you use to treat your water? API Stress Coat
Do you vacuum the substrate or just the water? Vacuum

*Parameters - Very Important
Did you cycle your tank before adding fish? Yes
What do you use to test the water? API Freshwater Master Test Kit
What are your parameters? We need to know the exact numbers, not just “fine” or “safe”.

Ammonia: 0ppm
Nitrite: 0ppm
Nitrate: 30-40ppm
pH: 7.4

How often do you feed your fish? Twice daily
How much do you feed your fish? Small pinch?
What brand of food do you feed your fish? Glofish flakes
Do you feed frozen or freeze-dried foods? No

Illness & Symptoms
How long have you had this fish? 13 months
How long ago did you first notice these symptoms? About a week and a half ago
In a few words, can you explain the symptoms?
Bubble like bumps on the sides of the dorsal fin where it meets the body. Dark bumps on each side of the fish toward the rear with a noticeable white spot.
Have you started any treatment for the illness? No
Was your fish physically ill or injured upon purchase? No
How has its behavior and appearance changed, if at all? No behavior change. Appearance changed as noted above.

Explain your emergency situation in detail. (Please give a clear explanation of what is going on, include details from the beginning of the illness leading up to now)
This fish is the only long-fin tetra in a school of 6 glofish tetras. He has developed what looks like bubbles around his dorsal fin and a bump on each side of his rear half. They started out as dark bumps, but have lightened up a bit and have a defined white bump as a head on the dark spots. This was first noticed about a week and a half ago. I've kept watch for further changes or erratic behavior, but he shows no sign of illness other than his appearance. He is eating and moving normally.
  • Thread starter
  • Thread Starter
  • #3


New Member
Reaction score
nikm128 said:
Definitely tumors
Thanks. Hopefully he doesn't keep progressing to a worse condition.

New Threads

Similar Threads

Follow FishLore!

FishLore on Social Media

Online statistics

Members online
Guests online
Total visitors

Aquarium Photo Contests

Aquarium Calculator

Top Bottom