I have been compiling this list for a while now,
I thought that some of you may find it helpfull.
I have used the most common, common name
but so there is no confusion you should refer to the
scientific name for your futrher research.

1.7cm/0.67" Ruby tetra Axelrodia riesei
2cm/0.79" Ember tetra Hyphessobrycon amandae
2cm/0.79" Green Neon tetra Paracheirodon simulans
2.1cm/0.83" Jellybean tetra Lepidarchus adonis
2.7cm/1.06" Silvertip tetra Hasemania nana
2.8cm/1.10" Royal tetra Inpaichthys kerri
3.1cm/1.22" Jewel tetra Hyphessobrycon eques
3.2cm/1.26" Blackline Penguinfish Thayeria boehlkei
3.2cm/1.26" Red phantom tetra Hyphessobrycon sweglesi
3.3cm/1.30" Flag tetra Hyphessobrycon heterorhabdus
3.4cm/1.34" Rosy tetra Hyphessobrycon rosaceus
3.4cm/1.34" Splash tetra Copella arnoldi
3.6cm/1.42" Black phantom tetra Hyphessobrycon megalopterus
3.6cm/1.42" Firehead tetra Hemigrammus bleheri
3.8cm/1.50" Lemon tetra Hyphessobrycon pulchripinnis
3.9cm/1.54" False rummynose tetra Petitella georgiae
4.1cm/1.61" Cochu's blue tetra Boehlkea fredcochui
4.2cm/1.65" Emperor tetra Nematobrycon palmeri
4.3cm/1.69" Ornate tetra Hyphessobrycon bentosi
4.4cm/1.73" Head-and-taillight tetra Hemigrammus ocellifer
4.5cm/1.77" Black neon tetra Hyphessobrycon herbertaxelrodi
4.5cm/1.77" Neon tetra Paracheirodon innesi
4.5cm/1.77" Serpae tetra Hyphessobrycon Serpae
4.5cm/1.77" X-ray tetra Pristella maxillaris
5cm/1.97" Cardinal tetra Paracheirodon axelrodi
5cm/1.97" False black tetra Gymnocorymbus thayeri
5cm/1.97" Roberti tetra Moenkhausia robertsi
5cm/1.97" Rummy Nose tetra Hemigrammus rhodostomus
5cm/1.97" White Tip tetra Hyphessobrycon Bentosi Bentosi
5.1cm/2.01" Flame tetra Hyphessobrycon flammeus
5.1cm/2.01" Glowlight tetra Hemigrammus erythrozonus
5.3cm/2.09" Featherfin tetra Hemigrammus unilineatus
5.3cm/2.09" Gold tetra Hemigrammus rodwayi
5.5cm/2.17" Bloodfin tetra Aphyocharax anisitsi
5.5cm/2.17" White Skirt tetra Gymnocorymbus ternetzi
5.6cm/2.20" Spotfin tetra Hyphessobrycon socolofi
6cm/2.36" Black widow tetra Gymnocorymbus ternetzi
6cm/2.36" Diamond tetra Moenkhausia pittieri
6cm/2.36" Glass bloodfin Prionobrama filigera
6.1cm/2.4" Bleeding-heart tetra Hyphessobrycon erythrostigma
7cm/2.76" Columbian tetra Hyphessobrycon columbianus
7cm/2.76" Redeye tetra Moenkhausia sanctaefilomenae
7.5cm/2.95" Banded tetra Astyanax aeneus
7.63cm/3" Buenos Aries tetra Hyphessobrycon anisitsi
8cm/3.15" African moon tetra Bathyaethiops caudomaculatus
8cm/3.15" Bandtail tetra Moenkhausia dichroura
8cm/3.15" Congo tetra Phenacogrammus interruptus
9cm/3.5" Discus Tetra Brachychalcinus orbicularis
9.6cm/3.78" Niger tetra Arnoldichthys spilopterus
12cm/4.72" Longfin tetra Brycinus longipinnis
15.25cm/6" Bucktooth tetra Exodon paradoxus
76.2cm/30" Sabretooth tetra Hydrolycus scomberoides