below are some possible tankmates
CHARACINS
Silver dollar - Metynnis argenteus
African pike- Hepsetus odoe
Freshwater Barracuda - Ctenolucius hujeta
Distichodus notospilus- Distichodus notospilus
Distichodus fasciolatus - Distichodus fasciolatus
Nurse tetra - Alestes nurse
African tigerfish - Hydrocynus goliath
Vampire Characin-Hydrolycus scomberoides
CICHLIDS(*see note)
Oscar - Astronotus ocellatus
Umbee- Cichlasoma umbriferum
Golden Tropheops- Pseudotropheus tropheops
Black Belt Cichlid - Cichlasoma maculicauda
Blue Flash -Thorichthys aureus
Uaru - Uaru amphicanthiodes
Carpinte Cichlid - Cichlasoma carpinte
Chrysonotus Cichlid -Copadichromis chrysonotus
Chunky Hap- Protomelas annectens
Firemouth -Cichlasoma meeki
Guenther's Cichlid- Chromidotilapia guentheri guentheri
Haitian Cichlid- Cichlasoma haitiensis
Leopold's Angelfish- Pterophyllum leopoldi
Lifalili Jewel Cichlid- Hemichromis lifalili
Livingstoni's Nimbochromis-Nimbochromis livingstonii
Malawi Blue Dolphin -Cyrtocara moorii
Nicaragua Cichlid- Hypsophrys nicaraguensis
Nkata Cichlid- Copadichromis nkatae
Pasionis Cichlid- Cichlasoma pasionis
Rainbow Cichlid- Herotilapia multispinosa
Tiger Tilapia-Tilapia mariae
CATFISH
Dusky Pimelodid -Pimelodus blochii
Crystal-Eyed Catfish- Mystus wyckii
Banded Shovelnose Catfish- Brachyplatystoma juruense
Spotted Shovelnose-Hemisorubim platyrhynchos
Giraffe Catfish-Auchenoglanis occidentalis
Dwarf giraffe Catfish-Parauchenoglanis macrostoma
DATS
widebar datnoid- Datnioides pulcher 16''
Thinbar datnoid- Datnioides undecimradiatus 16''
Indonesian datnoid-Coius microlepis 18''
PLECOS
Adonis pleco-Acanthicus adonis
Black adonis-Acanthicus hystrix
GARS
Spotted gar -Lepisosteus ocula
Tropical Gar-Atractosteus tropicus
Shortnose Gar- Lepisosteus platostomus
KNIFEFISH
Clown Knifefish-Chitala chitala
African Knifefish- Xenomystus nigri
banded knifefise-Gymnotus carapo
LABYRINTHFISH
Giant Gourami- Osphronemus goramy
EELS
Tire Track Eel-Mastacembelus armatus
Peacock Eel-Macrognathus aculeatus
CYPRINIDS
Bala Shark-Balantiocheilos melanopterus
Red-Finned Cigar Shark-Leptobarbus hoevenii
Tinfoil Barb-Barbodes schwanefeldii
Chinese Algae Eater- Gyrinocheilus aymonieri
Clown Loach- Botia macracantha
MISC.
Black Ghost Knifefish- Apteronotus albifrons
Elephantnose-Gnathonemus petersii
Black Devil Stingray-Potamotrygon leopoldi
Motoro Stingray-Potamotrygon motoro
(*note :to avoid agression do not have breeding pairs )
bear in mind when mixing fish a lot will depend on the individual personalities one fish of a certain species may be mellow and another of the same species a holy terror.Always watch for agression when mixing any fish
This list was stolen from be blonde just did a google search, and since all fish are different and yours seem to be a cold blooded killer id try something with a self defense mechinisim ie like spines anyways good luck.
