What fresh/cold water tropical fish swim at the top of the tank?

I have just set up a small fish tank and have fresh/cold water tropical fish ( loach/chiclid/cory/tetra/barb) in total 11 fish with most of them swimming at the bottom or middle of the tank. I would like some fish that swim around the top of the tank. Can anyone make some suggestions.

African Malawi Cichlid Fish Tank Aquarium

After many changes, the finished Malawi fish tank, housed in 450 litre bow fronted aquarium (5′x2′x2′) are approx 70 fish including 4 clown loach, 3 Pictus catfish, 3 Bristlnose pleco, 1 Rainbow shark, 4 Denison Barbs, 3 Tropheus and an array of Malawi Cichlids from a variety of Alunocara to Yellow Labs and Livingstonii.

Before you say there are too many fish, I promise you there aren’t, if there were any less then the aggression between them would be too high!

The set up consists of:

Juwel Vision 450 Fish Tank (450 litres)
1 x Juwel Jumbo internal filter
1 x Fluval FX5 external filter
2 x 1500lph powerheads with air inlets and polishing filters
2 x 300W heaters
Approx 100-120kg ocean rock
Colour and Blue T5 lighting tubes
Blue moonlight LED strips

As expected the malawis are breeding regularly, there always 2-3 females pregnant at any one time, 25-50% water change carried out once per week.

Approx cost including fish was £2k but it brings hours of relaxation so worth every penny !!

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