What Fish in Downgraded Tank?

ollysaquariums

Active Member
View Badges
Joined
Jun 28, 2025
Messages
134
Reaction score
40
Location
Queensland
What state or country do you live in
Australia
Rating - 0%
0   0   0
Hey all, I currently have a 4ft long 303 litre aquarium including sump and my cabinet has been annoying and the hinges are all detached and the wood is rotting (I bought it second hand) and I’m thinking of just downgrading anyway to a waterbox 20 cube or 25 cube, but I’m not sure what fish I could keep or not. I currently have a pair of clownfish which I will keep, a blue tang which I was planning on selling soon before it outgrows my current tank, a coral beauty, flame hawkfish, yellow wrasse and yellow coral goby. The clownfish have an anemone too so I don’t know how well that’ll go with the corals and stuff. What fish could I keep and what fish would need to go?

20260509_121114_EF9342AD-5405-4296-817E-8750419BB4C8.png
 
I'd get others to chime in as well, but my gut instinct is that the coral beauty and yellow wrasse will need to go. The flame hawkfish would probably be fine.
The yellow goby is the one I'd be most concerned about since I'd expect any aggression to be directed towards it.

As for the anemone, if you give it a well lit spot near the top of the rocks and give it good random flow it should stay put. I've got some that like to sit near the top of my rockwork and don't move for months on end. They typically only move if they split or I change the flow or rarely the rockwork.
 

TOP 10 Trending Threads

IF YOU HAD TO OPERATE EVERYTHING ELSE MANUALLY, WHICH AUTOMATED SYSTEM WOULD YOU KEEP?

  • Auto top-off

    Votes: 29 56.9%
  • Automated dosing

    Votes: 2 3.9%
  • Mechanical filtration / roller filter

    Votes: 3 5.9%
  • Automated water testing

    Votes: 2 3.9%
  • Automatic feeding

    Votes: 1 2.0%
  • Lighting schedule

    Votes: 9 17.6%
  • Controller and remote monitoring

    Votes: 3 5.9%
  • Leak detection and emergency shutoff

    Votes: 1 2.0%
  • Automatic water changes

    Votes: 0 0.0%
  • None. I prefer to operate everything manually

    Votes: 0 0.0%
  • Something else (explain in the comments)

    Votes: 1 2.0%
Back
Top
Home
Post thread…
Market
What's new