Per AqAdvisor:
http://aqadvisor.com/AqAdvisor.php?...qSpeciesWindowSize=short&AqSearchMode=simple&
Recommendations/Warnings/Suggestions/Notes:
Warning: Goldfish is not recommended for your tank - it may eventually outgrow your tank space, potentially reaching up to 12 inches.
Warning: At least 5 x Harlequin Rasbora are recommended in a group.
Recommended temperature range: 22 - 23 C. [Display in Farenheit]
Recommended pH range: 6 - 7.8.
Recommended hardness range: 5 - 15 dH.
Warning: You NEED to add more aquarium filtration capacity!!!
Your aquarium filtration capacity for above selected species is 11%.
Your tank is too small - it will require massive amount of frequent water changes each week!
Your aquarium stocking level is 321%.
Your tank is seriously overstocked. Unless this setup is temporary, you should consider a larger tank.
Also Goldfish are Coldwater. Your other Fish are tropical. It appears you have Common Goldfish. They do best in Ponds. For now if you can move them into a 55g it would give them room to grow. They grow VERY fast or they die
Commons can live over 20yrs and can get over a foot long.
Ok. Big water change for now. Use Dechlor. Then think about what you'd like to do.
Sorry for throwing so much at you. Just want your fish to survive.
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