I have forgotten which Aboreal meant, high or low, but I am pretty sure it means High. The best Aboreal darts are Thumbnails (IMO). This includes: D. Imitators, D. Vent's (forgot the full name). Those are the most common and least expensive. Some more expensive ones are out there as well, like Fantisticas' and Pumilios.
If I was wrong on which Aboreal meant then let me know. Pretty much any of the larger Darts prefer the lower areas: Azereus, Tinc's, Leucs, Auratus', Terribilis', etc...
450g Planted Discus Tank - Work in Process!