A tropical aquarium fish that starts with a t five letters?

There are a wide group of fish named tetras (they include neon, black widow ect.) and there is also a fish named the tiger barb and they need some conpanions with them in the tank as the nip the fins of other long finned fish such as angel fish ect. If kept alone they will become very troublesome and are best kept with 6 or 7 othersalthough they can be kept in groups of 3 or 4 but are more likely to nip fins, when kept in groups of 7 ect. they with generally leave other inhabitants alone