I would start off with 8 meeki juveniles. Try and look out for youngsters that already show a nice amount of colour. There are a lot of poor quality meeki about that are a washed out grey. Although these may colour up a bit when settled into an aquarium they won't be as nice as young fish that are colourful from a young age.Thanks for commenting I was hoping you would ?
Yer you put me onto getting a group of thorichthys a while back on my first thread on here. The thread was about having higher tap nitrates 20ppm out the tap, if you recall?
Because of the nitrates you advise I go for a thorichthys from the meeki group and of the 3 meeki is the my favourite. I'll also be going with your suggestion of wild type swords, looking at people's meeki biotopes on Google the swords really complement them well.
What numbers of each would you suggest for my tank? I've started my scape now and started another thread on it, I'll tag you in it if you'd like to see what I've come up with?
You won't be able to sex young meeki so just go for a group and hope for a good ratio.
With Live bearing fish you also need to shop about. Shops stock a lot of fish with poor genetics that are often prone to bacterial infections. Look out for lively fish with bright eyes and nice extended fins. Live bearing fish are easy to sex, I would aim for one male and 6 to 8 females. 2 males in the same tank will fight. Wild green colour swordtails are my choice of preference and will compliment your meeki nicely.
When scaping your tank try to think long term. Your meeki will eventually stop schooling together and form pairs. When this happens they will want small individual territories and spawning sites. Try to provide as many as possible with line of sight breaks so each pair has its own little zone. I have had as many as 4 pairs all spawning at the same time. If the tank is set up right it's a joy to watch and works without to much aggression.
Being sand sifting cichlids it's also good to provide a small grain sandy substrate for them to behave naturally as they would in the wild. Think of meeki as hard water geophagus which they basically are. Their Gill rakers are not quite as adapted as the South american earth eaters but they are a very good case of convergent evolution.
I would try to resist the temptation to add any other cichlid species. A group of meeki will provide all the entertainment and visual impact you could need, adding other species could interrupt some of the behaviour you will enjoy seeing with your group.
Hope this helps.