The Tallian are a lithe, warlike race. They have slight builds, but are not always short, ranging anywhere from about 5'4" to 6'. They are very quick, but not often very strong. They favor smaller weapons and are rarely found with axes or hammers. They have ebony skin and red eyes without noticeable pupils.
The Tallian have their own exclusive continent that has only two countries on it. The two nations are always at war. It is a small continent and they do not allow other races on. They have settled in other countries as traders and the like, but only as a part of other countries, not founding their own. And have a total population in the world of about a million. They hold a grudge against the Gruekonn for unknown reasons.

How much do they trade amonst themselves? Are they all as violent as the nations they hail from?

They trade all sorts of things with anybody. From varieties of wood that only grow in their countries to gems. No, they are not always violent, but just can't seem to get along all the time, although they to have a hot temper.

Since they're so small, what is their fighting style?

Uh, fighting style?

What types of weapons do they like? Daggers?

Daggers, long knives, smaller swords, bows, javelins, stuff like that.

Ach! The mystery! Why do they not like the Gruekonns? Interesting! I love this race, well done!