Although I speak spanish fairly well I do not know the word they use for large mouth bass. I was trying to explain what kind of fish I had in my pond to some of the Mexican guys that do odd jobs around my property and was at a loss. I know that bagre=catfish, and mojarra=generic panfish of almost any kind(or so it seems to me,apparently misused in the same way we use "perch" in english). I found perca and pez sol de orejas azules as bluegill translations.After googling for LMB translations I came up with el huro, and la lobina negra. But knowing spanish there is quite likely a mexican name for LMB not listed in most dictionaries. It seems there has to be a name given the mexican LMB fishing tourism that is so well known.

When I was in Spain many years back, LMB were referred to as black bass, so maybe something w/ Negre in it?

boca grande = big mouth
no estoy seguro cual palabra es bass

I just asked the cashier from B.P.S., she called her cousin in Mexico, who told her that they call them ROBALLO. I sure hope I'm right about this, as I wouldn't want to ever give wrong advice to anyone.

According to this site: http://www.newton.dep.anl.gov/askasci/bio99/bio99488.htm
LMB is "robalo fino" in Mexico

Glad I don't live in Poland......
What follows are the common names for this fish in different countries:
Australia: Black bass, freshwater perch, gippoland perch.
Austria: Forellembarsch, perche truitee
Canada: Largemouth bass, achigan a grande bouche, and many of the terms
used in the US.
Czech Republic and Slovakia: okounek pstrukovy, ostracka
France: Black bass a grande boushe, perche truite.
Germany: Forellembarsch, grossmauliger forellenbarsch.
Hungary: Fekete suger, pisztrangsuger
Italy: persico trota, boccalone
Mexico: Tucha de patzcuaro, robalo fino, corvina negra, black bass, huro
y otros
Netherlands: Florellenbaars
Poland: weilkogebowy, bas weilkohebowy
Portugal: Black bass, perca americana, perca trucha, boca grande, robal
negro, achiga

I call them green carp.

I'm pretty sure you just need to put an "El" in front of the english version of the word, and add an "O" to the end:

El Largemoutho Basso or El Blacko Basso

I've also discovered that the louder you say something in english to someone of a foreign tongue, the more likely they are to understand it.

Let me know if you need anything else translated.

Funny -- I have all kinds of names for La black-a bass-a when she breaks my line.

Heck,I know a little spanish too,at least enought to get by on
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Hey,dos cevesa por favor