Size and growth
Adult Poecilotheria metallica reach about 16–18 cm and are fast growers. Adult Poecilotheria miranda reach about 14–17 cm (5.5–6.75 in) and are fast growers. That affects how quickly Gooty Sapphire Ornamentals and Bengal Ornamentals move through sling and juvenile enclosure sizes.
Do not use size alone to estimate age in either Poecilotheria metallica or Poecilotheria miranda. Sex, feeding and individual variation can change the pace of growth even when two spiders began at a similar size.
Enclosure and lifestyle
Gooty Sapphire Ornamentals are arboreal, while Bengal Ornamentals are arboreal. Build the Poecilotheria metallica enclosure for an arboreal spider and the Poecilotheria miranda enclosure for an arboreal spider instead of assuming two tarantulas need the same shape of setup.
For Poecilotheria metallica, substrate depth, retreat position and usable space should match its arboreal lifestyle. Apply the same rule separately to Poecilotheria miranda; the enclosure should make normal behaviour easy rather than forcing either species into a generic layout.
Temperature, water and moisture
A practical temperature range for Poecilotheria metallica is 20–27°C, with stable room conditions preferred; for Poecilotheria miranda, it is 21–26°C. Stable room conditions are more useful for both species than chasing small fluctuations within those ranges.
For Poecilotheria metallica, maintain moderate moisture with strong ventilation; never stagnant or swampy. For Poecilotheria miranda, maintain moderate moisture with strong ventilation and clean water. In both enclosures, keep fresh water available and adjust substrate moisture to how quickly the setup actually dries.
Temperament and maintenance
Poecilotheria metallica is an Old World species, while Poecilotheria miranda is an Old World species. That background is useful when planning maintenance, but individual Gooty Sapphire Ornamentals and Bengal Ornamentals can still differ noticeably in speed and defensiveness.
With both Poecilotheria metallica and Poecilotheria miranda, locate the spider before opening the enclosure, use long tools when they make the job safer and keep a catch cup ready for rehousing. Handling is not required for routine care.
Male and female lifespan
Male Poecilotheria metallica generally live roughly 3–5 years, while females can live 10–15+ years. Male Poecilotheria miranda generally live roughly 3–5 years, while females can live 10–12 years.
Those lifespan ranges make sex particularly relevant when comparing Poecilotheria metallica with Poecilotheria miranda. A confirmed female of either species is normally a much longer commitment than a mature male, and the exact age of an older juvenile may be impossible to know.
UK availability and trade notes
In the UK hobby, Poecilotheria metallica is currently classed as uncommon, while Poecilotheria miranda is classed as rare. Stock changes between specialist sellers, captive-produced batches and show weekends, so availability should be checked at the time of purchase.
For records and purchases, use the scientific names Poecilotheria metallica and Poecilotheria miranda as the main identifiers. Current trade notes list Poecilotheria metallica as 'CITES Appendix II — UK Annex B' and Poecilotheria miranda as 'CITES Appendix II; UK Annex B', so check current requirements before any international movement where controls may apply.
Practical difference in day-to-day care
The practical difference between Poecilotheria metallica and Poecilotheria miranda comes from the combination of lifestyle, adult size, growth and moisture needs. Those factors change how much substrate, vertical space and maintenance access each enclosure needs.
Whichever species you keep, let the individual spider settle into an enclosure designed for its own biology. That applies equally to Poecilotheria metallica and Poecilotheria miranda: fresh water, secure housing and patient observation matter more than trying to make the two species behave the same way.