Livestock compatible with Water Caltrop
Trapa natans
6 rated pairings from the Water Caltrop care guide. Compatibility here means water, temperament, tank zone and adult size all line up — the note on each card says why.
Excellent matches
4 · Same water, complementary zones, no conflict.
Otocinclus
Otocinclus vittatus
10 gal min · 1.5" adult · Peaceful
Small, peaceful algae-eaters that won't damage delicate plant tissues and benefit from the shade provided
Neon Tetra
Paracheirodon innesi
10 gal min · 1.5" adult · Peaceful
Peaceful schooling fish that thrive under floating plant cover and won't uproot or consume the plant
Amano Shrimp
Caridina multidentata
10 gal min · 2" adult · Peaceful
Excellent algae control without damaging plants; they graze on biofilm and algae around the caltrop
Java Moss
Taxiphyllum barbieri
Excellent companion plant that creates layered habitat; both plants benefit from similar nutrient requirements
Good matches
2 · Compatible with normal care — watch space and numbers.
Red Cherry Shrimp
Neocaridina davidi
5 gal min · 1.2" adult · Peaceful
Small, non-destructive shrimp that benefit from the shelter and won't harm the floating plant structure
Dwarf Gourami
Trichogaster lalius
15 gal min · 3.5" adult · Semi-aggressive
Peaceful mid-water swimmers that appreciate the shade and cover without being aggressive toward plants
Planning this tank?
Run the whole stock list through the calculator — it checks bioload and schooling numbers, not just pairings.