🐟 Black Skirt Tetra Gymnocorymbus ternetzi

The Black Skirt Tetra (Gymnocorymbus ternetzi) is a easy-care, semi-aggressive species from Paraguay and Guaporé basins. Adults reach roughly 3", so plan on a minimum tank of 20 gallons. Keep the water between 70–79°F with a pH of 6–7.5. This is a schooling fish — keep a group of at least 6 so it feels secure and colors up. It tends to nip fins, so avoid slow, long-finned tankmates. As an omnivore, it does best on a varied diet appropriate to its feeding style.

At a glance

Good tankmates for Black Skirt Tetra

Neon TetraCardinal TetraRummynose TetraSerpae TetraEndler's LivebearerPlatyMollySwordtailGerman Blue RamBolivian RamKribensisZebra DanioHarlequin RasboraCherry BarbTiger BarbRosy BarbWhite Cloud MinnowBronze CoryPanda CoryOtocinclusBristlenose PlecoKuhli LoachAmano ShrimpMystery SnailMarble HatchetfishBlack Neon TetraLemon TetraGlowlight TetraBloodfin TetraDiamond TetraBuenos Aires TetraEmperor TetraSilver Tip TetraX-Ray TetraScissortail RasboraPearl DanioGiant DanioGold BarbOdessa BarbDenison BarbCheckerboard BarbFive-Banded BarbBoesemani RainbowfishNeon Dwarf RainbowfishMadagascar RainbowfishCelebes RainbowfishHoney GouramiSparkling GouramiChocolate GouramiKeyhole CichlidFiremouth CichlidElectric Blue AcaraBlue AcaraRainbow CichlidSterbai CoryJulii CoryGlass CatfishUpside-Down CatfishYoyo LoachZebra LoachHillstream LoachRubber Lip PlecoClown PlecoSiamese Algae EaterRainbow SharkFlying FoxRosy Red MinnowGhost ShrimpBamboo ShrimpRabbit SnailGold TetraPenguin TetraRed Eye TetraFlame TetraColombian TetraSilver DollarEmerald Eye RasboraLeopard DanioGold Ring DanioRuby BarbMelon BarbTurquoise RainbowfishRed RainbowfishLicorice GouramiCroaking GouramiStrawberry BettaGolden RamFlag AcaraFestivum CichlidYellow Dwarf CichlidEmerald CoryAlbino CoryThree-Striped CoryAdolfo's CoryZebra OtoDwarf Chain LoachLeopard Frog Pleco (L134)Zebra Pleco (L046)Gold Nugget Pleco (L177)Vampire ShrimpRed Claw CrabClown KillifishRed SwordtailBalloon MollyAmerican FlagfishIndian Glassfish

Avoid these tankmates

AngelfishDiscusOscarJack DempseyGreen TerrorTexas CichlidFrontosaChinese Algae EaterBlack Ghost KnifefishRopefishSenegal BichirBucktooth TetraBanjar Red CichlidSalvini CichlidMidas CichlidFlowerhornVenustus CichlidLivingstonii CichlidCompressed CichlidCalvus Cichlid

See the full tankmate guide for Black Skirt Tetra →