Dwarf eel question

[Picasso the Triggerfish]

Why an eel that reaches 1´needs 65G dwarf( eel) while other that reaches 2´only needs 50G (snowflake eel)?

 

[lion king]

These are only recommendations and it's all about the source of information. The golden dwarf moray can be completely happy in something as small as a 30g, while some have even kept them in 20g. They rarely open swim and are not aggressive, mostly will find a spot or 2 and just tuck away. Those other tank recommendation for eels such as the 2' fangtooths are greatly understated, they need much larger tanks. The snowflake needs a larger tank than many recommend as well, this is about selling fish, snowflakes are so common they lie.

 

[Picasso the Triggerfish]

Thank you.