What citrus is this?

[Rannman]

Picked a few of these up at work (on the right), and I was hoping that someone could tell me what they are.  I thought they were just big limes but when I cut them, they were more orange inside with a nice grapefruit flavour with a few seeds.  Fruit on the left is a Tahitian lime.

Thanks, Anthony

[Patanax]

Shouldn't this be in the tropical section? There are probably more people who might know it too.

[Rannman]

This is possibly true, but I don’t live in the tropics and citrus here grows pretty much whereever I plant it, in a temperate climate.
Any chance you know what it is?

[SoCal2warm]

Does the tree appear to have been grafted? Do citrus grow wild easily where you are? It's possible you may have some sort of hybrid (which could be a unique new variety).

Is it possible it could be Calamondin? If you're in a more tropical climate the skin would remain green.

[Radoslav]

Move it to citrus section of the forum, here citrus growers can miss the post.

[Patanax]

Coincidentally, I read about a certain citrus variety on Reddit today, which could be the citrus you're looking for OP. It's a Vietnamese orange variety with green skin and orange flesh, called Cam sành.

[So_Cal_Mike]

Could it ba a Dalandan?

http://www.specialtyproduce.com/produce/Dalandan_Oranges_8670.php

[Nicole]

I have a tree with similar looking fruits on it. This tree came with the house, and we are planning to get rid of it because those fruits taste bitter and they are really small in size. They are just not edible. How are your fruits taste?

[Bush2Beach]

Same here.
Still a Citrus post better seen in the Citrus section of the forum.
Your logic could be used to post whatever, wherever.
I'm temperate as well growing sub tropicals and tropicals, doesn't mean Jaboticaba posts should reside in the temperate section, this can get confusing and mis leading for new growers is the main downside I see.

This is possibly true, but I don’t live in the tropics and citrus here grows pretty much whereever I plant it, in a temperate climate.
Any chance you know what it is?