Fisher led the way, hitting 10 of 11 shots in the game. Justin Hawkins added 20 points in an NMSU offense that hit 17 of 23 shots in the second half and 67 percent for the game.
J.R. Giddens scored a season low 15 points and Tony Danridge 14 for New Mexico. Giddens hit just 3 of 13 shots and was 0-for-6 on 3-pointers.
New Mexico (5-2) took its second straight lopsided road loss after getting off to its best start in seven years. The Lobos, beaten by UTEP 87-63 Sunday, again saw their weaknesses exposed at both ends of the floor.
While the Aggies were hitting 10 of their first 14 shots, New Mexico was simply trying to grab a rebound. They finally got one -- a team rebound -- with 9:35 left in the first half. NMSU won the rebounding by a 41-26 margin, including 15 offensive boards.
Defensively, New Mexico gave up numerous lay-ups and open looks as the Aggies hit 21 of 34 shots in the first 20 minutes. Fisher hit his first six shots and the Aggies' inside trio of Hawkins, Hatila Passos and Trei Steward hit 7 of 11 shots in the first half.
New Mexico's only serious threat consisted of back-to-back 3-pointers by Chad Toppert and Jamaal Smith that cut the NMSU lead to 32-25 with just under 8 minutes left in the first half. The Aggies' offense took off again when 7-footer Martin Iti took a pass as the trailer on a fastbreak and slammed it home.
The Lobos, who hit 9 of their first 14 shots, hit just 2 of 14 over the final 7:08 of the opening period.
The Aggies built a 54-33 halftime lead while in the midst of a 21-3 run that eventually pushed the lead to 66-35 with 17:10 left in the game.