I got a Lemon Tetra is lucking pregnant in the last few weeks but I'm not very sure about that because to me all Lemons I have are the same sex. Its look happy and eat very well ,in fact do everything norma. My water is ok in all. Got my test and I do my change very often . Please someone tell me . I try to put it in my 10 gal nursery but he/she got sad so I decide to put it back in the 55 one.I hope this photo helps. Thanks.

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55 Gals. Plants Anubias,Amazon Swords and more. Tetras: 6 Sarpaes.4 Red Eyes,5 Black Skirts,4 Giant Danios,2 Lemons, 2 Emerald Cory,4 German Blue.
10 gals. tank : Plants, Full of Guppies; 20 Gals. Tank planted Full of Guppies: 1 gal tank filled with Guppies

Hard to tell anything from those pictures. As far as I know tetras are not livebearers, they are egg layers. Does it look like all the scales are popping out like a pine cone at all?

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45g pentagonal
4 Swordtails, 2 dwarf Gouramis, 5 Mollies, 1 Rainbow Shark, 6 Molly fry 6 zebra danios

88 gal Malawi tank
4 Yellow labs, 1 Baenshi, 2 Borleyis, 3 Trewavas, 2 Livingstonis, 1 Venustus, 2 Green Terrors

Lemon tetras are egg scatterers. Also, it's fairly easy to tell males from females. The bottom fin that's yellow and the clear fin behind it will have a thicker black line on the edge. Females have the black, but it's usually as thin as a pencil line...

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20 gallon long:Amazon Swords, Ruffle Swords, Red Flame Swords, Fanwort, Wisteria,8 Lemon tetras,
6 otos, 11 Amano shrimp, 3 mystery snails, 3 Bolivian Rams, 3 black skirt tetra and 2-3 lemon tetra fry
10 gallon: 30 lemon tetra fry, give or take...1 gallon Anubias, Fish: 1 betta

No, that is the reason what I asking,To me looks like dropsy buy the scale are ok.

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55 Gals. Plants Anubias,Amazon Swords and more. Tetras: 6 Sarpaes.4 Red Eyes,5 Black Skirts,4 Giant Danios,2 Lemons, 2 Emerald Cory,4 German Blue.
10 gals. tank : Plants, Full of Guppies; 20 Gals. Tank planted Full of Guppies: 1 gal tank filled with Guppies

Well according to that they are all male,cause the black lines are real visible in all of them.

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55 Gals. Plants Anubias,Amazon Swords and more. Tetras: 6 Sarpaes.4 Red Eyes,5 Black Skirts,4 Giant Danios,2 Lemons, 2 Emerald Cory,4 German Blue.
10 gals. tank : Plants, Full of Guppies; 20 Gals. Tank planted Full of Guppies: 1 gal tank filled with Guppies