A lighting fixture for promoting the development of animals comprises a backlight, such as an LED or an array of LEDs, and a series of one or more retractable, rotatable or interchangeable lenses comprising quantum dots, such that the color and/or color temperature of the light emitted by the lighting fixture can be altered and optimized during animal development. A lighting fixture adapted for use on an aquarium may be in the form factor of a standard fluorescent tube and comprise one or more LEDs and a quantum dot-containing film for down-converting at least a portion of the light emitted by the LEDs so as to provide optimum wavelengths for photosynthesis by aquarium plants while simultaneously providing attractive display lighting for the aquarium fish.本發明係關於一種用於促進動物發育之燈具,其包括:一背光源,諸如一LED或LED之一陣列;及一系列之一或多個可伸縮、可旋轉或可互換透鏡,其等包括量子點,使得由該燈具發射之光之色彩及/或色溫可在動物發育期間變更且最佳化。經調適用於一水族館之一燈具可為一標準螢光燈管之形狀因子且包括一或多個LED及一含有量子點之膜以用於降頻轉換由該等LED發射之光之至少一部分以提供用於藉由水族植物產生光合作用之最佳波長且同時提供用於觀賞魚之誘人顯示光照。