Category Nuances for tetra:

• aggressive,
• tropical,
• adult,
• small,
• mature,
• common,
• smaller,
• peaceful,
• colored,
• unicellular,
• size,
• docile,
• lower,
• sensitive,
• weaker,
• ornamental,
• sized,
• level,
• little,
• active,
• fast,

Simple Categories for tetra:

• teleost,
• characin,
• organism,
• fish,
• feeder,
• fauna,